{"title":"Enantioselective regiospecific addition of propargyltrichlorosilane to aldehydes catalyzed by biisoquinoline <i>N</i>,<i>N'</i>-dioxide.","authors":"Noble Brako, Sreerag Moorkkannur Narayanan, Amber Burns, Layla Auter, Valentino Cesiliano, Rajeev Prabhakar, Norito Takenaka","doi":"10.3762/bjoc.20.255","DOIUrl":null,"url":null,"abstract":"<p><p>Distilled propargyltrichlorosilane with >99% isomeric purity was prepared for the first time, and its asymmetric catalytic regiospecific addition reaction to aldehydes was developed through a systematic catalyst structure-reactivity and selectivity relationship study. The observed catalyst structure-enantioselectivity relationship of the present allenylation reaction was found exactly opposite to that of the analogous allylation reaction. The method provided eleven α-allenic alcohols in 22-99% yield with 61:39-92:8 enantiomeric ratios. Furthermore, possible mechanisms of propargyl-allenyl isomerization of propargyltrichlorosilane were computationally investigated.</p>","PeriodicalId":8756,"journal":{"name":"Beilstein Journal of Organic Chemistry","volume":"20 ","pages":"3069-3076"},"PeriodicalIF":2.2000,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11610484/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Beilstein Journal of Organic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.3762/bjoc.20.255","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"CHEMISTRY, ORGANIC","Score":null,"Total":0}
引用次数: 0
Abstract
Distilled propargyltrichlorosilane with >99% isomeric purity was prepared for the first time, and its asymmetric catalytic regiospecific addition reaction to aldehydes was developed through a systematic catalyst structure-reactivity and selectivity relationship study. The observed catalyst structure-enantioselectivity relationship of the present allenylation reaction was found exactly opposite to that of the analogous allylation reaction. The method provided eleven α-allenic alcohols in 22-99% yield with 61:39-92:8 enantiomeric ratios. Furthermore, possible mechanisms of propargyl-allenyl isomerization of propargyltrichlorosilane were computationally investigated.
期刊介绍:
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