Nitchakan Purahong , Dr. Thapong Teerawatananond , Dr. Nawasit Chotsaeng , Pattarapapa Janthakit , Phattananawee Nalaoh , Prof. Dr. Vinich Promarak , Prof. Dr. Chutima Kuhakarn , Dr. Jatuporn Meesin
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DBU‐Mediated Reaction of 3‐Chlorooxindole and 9‐Xanthyl Fluorene for Synthesis of 3‐Arylidene Oxindole
This work reports a new route for the synthesis of 3‐(9H‐fluoren‐9‐ylidene)indolin‐2‐one derivatives via the reaction of 3‐chlorooxindoles and O‐ethyl S‐(9H‐fluoren‐9‐yl) carbonodithioates mediated by 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU). The reactions readily proceeded at room temperature, enable a collection of 3‐alkenyl oxindoles to be prepared within a short reaction time (15 minutes). The 3‐alkenyl oxindoles can be easily converted to 3‐fluorenyl oxindoles by NaBH4 reduction.
期刊介绍:
Organic chemistry is the fundamental science that stands at the heart of chemistry, biology, and materials science. Research in these areas is vigorous and truly international, with three major regions making almost equal contributions: America, Europe and Asia. Asia now has its own top international organic chemistry journal—the Asian Journal of Organic Chemistry (AsianJOC)
The AsianJOC is designed to be a top-ranked international research journal and publishes primary research as well as critical secondary information from authors across the world. The journal covers organic chemistry in its entirety. Authors and readers come from academia, the chemical industry, and government laboratories.