作者:Nicholas Tomkinson、Adrian Hall、Kerri Jones、Teyrnon Jones、Niall Killeen、Robert Pörzig、Paul Taylor、Sze Yau
DOI:10.1055/s-2006-956473
日期:2006.12
is described. N-Methyl-O-alkoxyformate hydroxylamine hydrochloride reagents can be prepd. in two high-yielding steps from N-Boc-N-methylhydroxylamine and were found to be bench stable. These were reacted with a variety of carbonyl compds. to give the corresponding α-functionalized products in 48-98% isolated yield via a proposed [3,3]-sigmatropic rearrangement.
描述了从醛和酮直接形成 α-碳酸酯的第一种方法。可制备N-甲基-O-烷氧基甲酸羟胺盐酸盐试剂。在来自 N-Boc-N-甲基羟胺的两个高产率步骤中,并被发现是稳定的。这些与各种羰基化合物反应。通过建议的 [3,3]-sigmatropic 重排,以 48-98% 的分离产率得到相应的 α-官能化产物。