Thallium(III) Nitrate Mediated Ring Contraction of 2‐Aryl‐1,2,3,4‐tetrahydro‐4‐quinolones: Stereoselective Synthesis of <i>trans</i> Methyl 2‐Aryl‐2,3‐dihydroindol‐3‐carboxylates
作者:Om V. Singh、M. Muthukrishnan、M. Sundaravedivelu
DOI:10.1080/00397910500466462
日期:2006.3.1
Abstract The ring contraction of N‐acetyl‐2‐aryl‐1,2,3,4‐tetrahydro‐4‐quinolones 1a–d with thallium(III) nitrate in trimethyl orthoformate afforded stereoselectively trans methyl N‐acetyl‐2‐aryl‐2,3‐dihydroindol‐3‐carboxylates 5a–d by oxidative rearrangement of aryl ring A.
摘要 N-乙酰基-2-芳基-1,2,3,4-四氢-4-喹诺酮1a-d 与硝酸铊(III)在原甲酸三甲酯中的缩环得到立体选择性反式甲基N-乙酰基-2-芳基-通过芳环 A 的氧化重排得到 2,3-二氢吲哚-3-羧酸盐 5a-d。