Reaction of an α,β-unsaturated nitro-compound with lithium dimethylcuprate. A novel synthesis of a 3α,5α-cyclosteroid
作者:Shirley Stiver、Peter Yates
DOI:10.1039/c39830000050
日期:——
Treatment of 3β-acetoxy-6-nitrocholest-5-ene with an excess of lithiumdimethylcuprate gives 3α,5α-cyclocholestan-6-one (E)-oxime; its Beckmann rearrangement product, 3α,5α-cyclo-6-aza-B-homocholestan-7-one, failed to undergo a ‘retro-Beckmann’ rearrangement.
用过量的二甲基二甲基碳酸锂处理3 - β-乙酰氧基-6-硝基胆甾-5-烯,得到3α,5α-环胆甾-6-一(E)-肟。其Beckmann重排产物3α,5α-cyclo-6- aza- B -homocholestan-7-one未能进行“ retro-Beckmann”重排。
YATES, PETER;STIVER, SHIRLEY, CAN. J. CHEM., 65,(1987) N 9, 2203-2216