Studies on Organometallic Compounds. VII. Reaction of Di-tert-butyl Dicarbonate with .ALPHA.-Trialkylstannyl Derivatives of Pyridine, Quinoline, and Isoquinoline.
作者:Yutaka YAMAMOTO、Hidekazu OUCHI、Takuo TANAKA
DOI:10.1248/cpb.43.916
日期:——
Di-tert-butyl dicarbonate was found to be effective for direct introduction of a tert-butoxycarbonyl group at the α-position of the pyridine nucleus via the trialkylstannyl group; reaction of α-trialkylstannyl derivatives of pyridine, quinoline, and isoquinoline with di-tert-butyl dicarbonate gave the corresponding α-tert-butoxycarbonyl derivatives in good yields, althrough small amounts of a variety of by-products were formed except in the case of pyridine.
研究发现,二叔丁基二碳酸酯可有效通过三烷基锡基团直接在吡啶核的α位引入叔丁氧羰基。反应中,吡啶、喹啉和异喹啉的α-三烷基锡衍生物与二叔丁基二碳酸酯反应,以良好产率生成相应的α-叔丁氧羰基衍生物,但在吡啶的情况下,除少量多种副产物生成外。