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Benzoylation of Amines sans Alkali: A Green Protocol in Neat Phase 无碱胺苯甲酰化:纯相中的绿色方案
Organic Chemistry International Pub Date : 2010-12-29 DOI: 10.1155/2010/743186
Somnath Ghosh, Jhantu Das
{"title":"Benzoylation of Amines sans Alkali: A Green Protocol in Neat Phase","authors":"Somnath Ghosh, Jhantu Das","doi":"10.1155/2010/743186","DOIUrl":"https://doi.org/10.1155/2010/743186","url":null,"abstract":"A new procedure for benzoylation of aromatic and aliphatic amines has been developed in neat phase without use of any solvent or alkali.","PeriodicalId":19688,"journal":{"name":"Organic Chemistry International","volume":"100 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2010-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83337550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Volatile Oil Constituents of Rosa canina L.: Quality As Affected by the Distillation Method 玫瑰挥发油成分:蒸馏方法对品质的影响
Organic Chemistry International Pub Date : 2010-12-28 DOI: 10.1155/2010/621967
K. Hosni, Amel Kerkenni, Wafa Medfei, N. Brahim, H. Sebei
{"title":"Volatile Oil Constituents of Rosa canina L.: Quality As Affected by the Distillation Method","authors":"K. Hosni, Amel Kerkenni, Wafa Medfei, N. Brahim, H. Sebei","doi":"10.1155/2010/621967","DOIUrl":"https://doi.org/10.1155/2010/621967","url":null,"abstract":"The volatile oils of R. canina flowers were isolated by hydrodistillation (HD) and traditional dry distillation (DD) and analyzed by HRGC-FID and GC-MS. Compared to HD, DD at 50°C leads to the isolation of high quality oil which contains the highest content of oxygenated compounds (83%). The main components are the 2-phenethyl alcohol and eugenol. The percentage of the 2-phenethyl alcohol, a highly desirable component in rose oil, was significantly higher (58.4%) in DD extract when compared to that of HD one (13.6%). As temperature increased (100°C) during DD, the oil quality decreased. The most significant changes were observed in 2-phenethyl alcohol percentage (4.5%). Moreover, an increase of alkanes/alkenes and the production of furan derivatives were observed. So, DD at moderate temperature (50°C) seemed more suitable to improve the volatile oil quality and hence, to make more value of R. canina.","PeriodicalId":19688,"journal":{"name":"Organic Chemistry International","volume":"1 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2010-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80801927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
Effect of a Strategically Positioned Methoxy Substituent on the Photochemistry of 3-Aryl-3H-1-Oxacyclopenta[l]Phenanthren-2-Ones 策略性定位甲氧基取代基对3-芳基- 3h -1-氧环戊基[1]菲-2-酮的光化学影响
Organic Chemistry International Pub Date : 2010-12-28 DOI: 10.1155/2010/764185
Roshini K. Thumpakara, B. Jose, P. A. Unnikrishnan, S. Prathapan, N. Rath
{"title":"Effect of a Strategically Positioned Methoxy Substituent on the Photochemistry of 3-Aryl-3H-1-Oxacyclopenta[l]Phenanthren-2-Ones","authors":"Roshini K. Thumpakara, B. Jose, P. A. Unnikrishnan, S. Prathapan, N. Rath","doi":"10.1155/2010/764185","DOIUrl":"https://doi.org/10.1155/2010/764185","url":null,"abstract":"Irradiation of 3-methoxy-3-aryl-3H-1-oxacyclopenta[l]phenanthren-2-one derivatives 5a–d resulted in singlet-mediated decarbonylation reaction leading to the formation of phenanthrene derivatives 9a–d. The structure of the photoproduct was unequivocally established on the basis of X-ray crystallographic analysis.","PeriodicalId":19688,"journal":{"name":"Organic Chemistry International","volume":"77 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2010-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72851313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Synthesis and Antimicrobial Studies of Tridentate Schiff Base Ligands with Pyrazolone Moiety and Their Metal Complexes 吡唑啉酮类三齿席夫碱配体及其金属配合物的合成与抗菌研究
Organic Chemistry International Pub Date : 2010-12-26 DOI: 10.1155/2010/648589
R. Jayarajan, G. Vasuki, P. S. Rao
{"title":"Synthesis and Antimicrobial Studies of Tridentate Schiff Base Ligands with Pyrazolone Moiety and Their Metal Complexes","authors":"R. Jayarajan, G. Vasuki, P. S. Rao","doi":"10.1155/2010/648589","DOIUrl":"https://doi.org/10.1155/2010/648589","url":null,"abstract":"Synthesis, characterization, and antimicrobial activity of tridentate Schiffbase ligands containing pyrazolone moiety (3a and 3b) and their transition metal complexes of VO(II), Cu(II), Fe(III), and Co(II) 4a–h have been investigated. The complexes show enhanced antibacterial activity against S. aureus, E. coli, and S. typhi and antifungal activity against C. albicans, Rhizopus sp., and A. niger compared to the ligands.","PeriodicalId":19688,"journal":{"name":"Organic Chemistry International","volume":"1 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2010-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80913498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Study of Catalytic Hydrogenation and Methanol Addition to α-Methylene-γ-Lactone of Eremanthine Derivatives Eremanthine衍生物α-亚甲基-γ-内酯的催化加氢和甲醇加成研究
Organic Chemistry International Pub Date : 2010-12-19 DOI: 10.1155/2010/603436
J. Alves
{"title":"Study of Catalytic Hydrogenation and Methanol Addition to α-Methylene-γ-Lactone of Eremanthine Derivatives","authors":"J. Alves","doi":"10.1155/2010/603436","DOIUrl":"https://doi.org/10.1155/2010/603436","url":null,"abstract":"The sesquiterpene lactones guaia-1(10),11(13)-dieno-4α-hydroxy,9α-acetyl-15-iodine-12,6α-lactone (2), guaia-1(10),4(15),11(13)-trieno-9α-hydroxy-12,6α-lactone (3), (11S)-guaia-4(15),10(14)-dieno-9α-hydroxy-13-methoxy-12,6α-lactone (4), (11S)-guai-1(10)-eno-4α,9α-dihydroxy-13-methoxy-12,6α-lactone (5), and guaia-1(10),11(13)-dieno-4α,9α-dihydroxy-15-iodine-12,6α-lactone (6) were previously obtained starting from the natural product eremanthine (1). In this paper we report the catalytic hydrogenation reactions of allylic derivatives 2–5 and the methanol addition to α-methylene-γ-lactone of the iodohydrin 6.","PeriodicalId":19688,"journal":{"name":"Organic Chemistry International","volume":"43 1","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2010-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77382893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Facile Method for the Synthesis of Oxoketene-N,S- and -N,N-acetals from Reactions of Amino Compounds 氨基化合物反应合成氧烯- n,S-和- n, n -缩醛的简便方法
Organic Chemistry International Pub Date : 2010-11-28 DOI: 10.1155/2010/396020
A. Mathews, E. R. Anabha, C. Sholly
{"title":"A Facile Method for the Synthesis of Oxoketene-N,S- and -N,N-acetals from Reactions of Amino Compounds","authors":"A. Mathews, E. R. Anabha, C. Sholly","doi":"10.1155/2010/396020","DOIUrl":"https://doi.org/10.1155/2010/396020","url":null,"abstract":"2-Aroyl-3,3-bis(alkylsulfanyl)acrylaldehydes reacted with various primary amines, namely, o-phenylenediamine, ethylenediamine, and anilines to produce functionalized oxoketene-N,S-acetals and N,N-acetals in good yields. Imidazolo derivatives synthesized with o-phenylenediamine and ethylenediamine containing a formyl group could act as valuable starting materials for a variety of substituted heterocyclic compounds.","PeriodicalId":19688,"journal":{"name":"Organic Chemistry International","volume":"33 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2010-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88542473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Crystal Structure of Poly[(acetone-O)-3-((3,4-dimethoxyphenyl)(4-hydroxy-2-oxo-2H-chromen-3-yl)methyl)-(2-oxo-2H-chromen-4-olate)sodium] 聚[(丙酮-o)-3-((3,4-二甲氧基苯基)(4-羟基-2-氧- 2h -铬-3-基)甲基)-(2-氧- 2h -铬-4-酸盐)钠]的晶体结构
Organic Chemistry International Pub Date : 2010-06-28 DOI: 10.1155/2010/564256
A. Penkova, P. Retailleau, I. Manolov
{"title":"Crystal Structure of Poly[(acetone-O)-3-((3,4-dimethoxyphenyl)(4-hydroxy-2-oxo-2H-chromen-3-yl)methyl)-(2-oxo-2H-chromen-4-olate)sodium]","authors":"A. Penkova, P. Retailleau, I. Manolov","doi":"10.1155/2010/564256","DOIUrl":"https://doi.org/10.1155/2010/564256","url":null,"abstract":"The structure of Poly[(acetone-O)-3-((3,4-dimethoxyphenyl)(4-hydroxy-2-oxo-2H-chromen-3-yl)methyl)-(2-oxo-2H-chromen-4-olate)sodium] was determined by X-ray crystallography. The compound crystallizes in an orthorhombic system and was characterized thus P   , (2) A, (3) A, A. , (10) A3. The crystal structure was solved by direct methods and refined by full-matrix least-squares on to final values of and .","PeriodicalId":19688,"journal":{"name":"Organic Chemistry International","volume":"72 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2010-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90008382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Superacid-Induced Reactions of Nefopam 耐福泮的超强酸诱导反应
Organic Chemistry International Pub Date : 2010-06-13 DOI: 10.1155/2010/496818
Larecia Knoecer, Daniel J. DeSchepper, D. Klumpp
{"title":"Superacid-Induced Reactions of Nefopam","authors":"Larecia Knoecer, Daniel J. DeSchepper, D. Klumpp","doi":"10.1155/2010/496818","DOIUrl":"https://doi.org/10.1155/2010/496818","url":null,"abstract":"The analgesic drug nefopam reacts in superacidic media to form a dicationic superelectrophiles by ring opening. The dication species is capable of reacting with arenes in Friedel-Crafts-type conversions. This chemistry is used to prepare novel derivatives of nefopam.","PeriodicalId":19688,"journal":{"name":"Organic Chemistry International","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89311006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Comparative Study of Two Quantum Chemical Descriptors in Predicting Toxicity of Aliphatic Compounds towards Tetrahymena pyriformis 两种量子化学描述符预测脂肪族化合物对梨形四膜虫毒性的比较研究
Organic Chemistry International Pub Date : 2010-02-14 DOI: 10.1155/2010/545087
A. H. Pandith, S. Giri, P. Chattaraj
{"title":"A Comparative Study of Two Quantum Chemical Descriptors in Predicting Toxicity of Aliphatic Compounds towards Tetrahymena pyriformis","authors":"A. H. Pandith, S. Giri, P. Chattaraj","doi":"10.1155/2010/545087","DOIUrl":"https://doi.org/10.1155/2010/545087","url":null,"abstract":"Quantum chemical parameters such as LUMO energy, HOMO energy, ionization energy (I), electron affinity (A), chemical potential (), hardness () electronegativity (), philicity (), and electrophilicity () of a series of aliphatic compounds are calculated at the B3LYP/6-31G(d) level of theory. Quantitative structure-activity relationship (QSAR) models are developed for predicting the toxicity () of 13 classes of aliphatic compounds, including 171 electron acceptors and 81 electron donors, towards Tetrahymena pyriformis. The multiple linear regression modeling of toxicity of these compounds is performed by using the molecular descriptor log P (1-octanol/water partition coefficient) in conjunction with two other quantum chemical descriptors, electrophilicity () and energy of the lowest unoccupied molecular orbital (). A comparison is made towards the toxicity predicting the ability of electrophilicity () versus as a global chemical reactivity descriptor in addition to log P. The former works marginally better in most cases. There is a slight improvement in the quality of regression by changing the unit of from mg/L to molarity and by removing the racemates and the diastereoisomers from the data set.","PeriodicalId":19688,"journal":{"name":"Organic Chemistry International","volume":"42 1","pages":"1-17"},"PeriodicalIF":0.0,"publicationDate":"2010-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90552039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Directed Metalation of Heterocycles, 5-Methoxy-2-phenyloxazol-4-yllithium: An Approach to ,-Dehydroamino Acids 杂环5-甲氧基-2-苯氧恶唑-4-基锂的定向金属化:一种制备-脱氢氨基酸的方法
Organic Chemistry International Pub Date : 2010-01-01 DOI: 10.1155/2010/452956
S. Chandrasekhar, M. Srimannarayana
{"title":"Directed Metalation of Heterocycles, 5-Methoxy-2-phenyloxazol-4-yllithium: An Approach to ,-Dehydroamino Acids","authors":"S. Chandrasekhar, M. Srimannarayana","doi":"10.1155/2010/452956","DOIUrl":"https://doi.org/10.1155/2010/452956","url":null,"abstract":"5-Methoxy-2-phenyloxazole was deprotonated at (by -BuLi or LDA, in THF at −78). The resulting anion was generally unreactive to alkylation (except methylation with MeI-TMEDA) but added to PhCHO and CHCHO. The alcohols thus produced dehydrated and ring opened in acid, to the corresponding ,-dehydroamino acids in moderate overall yields.","PeriodicalId":19688,"journal":{"name":"Organic Chemistry International","volume":"175 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79765785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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