The synthesis of a 5,7-membered fused-ring compound by a tandem Pummerer rearrangement and intramolecular [4+3] cycloaddition
作者:Youhong Hu、Ligong Ou、Donglu Bai
DOI:10.1016/s0040-4039(98)02404-6
日期:1999.1
A 5, 7-membered fused-ring compound with a functionalized angular substituent, 8-methoxy-8aα-methoxymethyl-7-phenylthio-1,2,3,6-tetrahydro-3aα, 6β-epoxyazulene, was synthesizedvia a tandem Pummerer rearrangement and intramolecular [4+3] cycloaddition.
Deacetylation of α-Bromo-α-substituted-acetoacetates
作者:Youhong Hu、Donglu Bai
DOI:10.1016/s0040-4039(98)00260-3
日期:1998.4
A new and efficient method for the deacetylation of alpha-bromo-alpha-substituted-acetoacetates to obtain alpha-bromoesters has been achieved by treatment with LiClO4/Et3N in ether at room temperature. (C) 1998 Elsevier Science Ltd. All rights reserved.