METAL DEPENDENT 1,3-ASYMMETRIC INDUCTION IN THE RETRO-[1,4]-BROOK REARRANGEMENT OF A SILYLATED TIGLYL ALKALIMETAL COMPOUND
作者:Christoph Gibson、Thomas Buck、Mathias Noltemeyer、Reinhard Brückner*
DOI:10.1016/s0040-4039(97)00516-9
日期:1997.4
species which underwent an irreversible retro-[1,4]-Brook rearrangement giving rise to a 22:78 mixture of the anti,trans and the syn,trans diastereomer of the tiglyl silane 6. The same sulfide 5 and potassium naphthalenide provided the same products anti,trans- and syn,trans- 6 as a 96:4 mixture. This time they arose from the reversible retro-[1,4]-Brook rearrangement of a tiglyl potassium intermediate
在-78°C的THF中,三烯丙基苯硫醚5和萘二甲酸锂生成的三烯丙基锂物质进行不可逆的逆向[1,4]-布鲁克重排,从而形成反,反式和反式的22:78混合物。tiglyl硅烷6的syn,trans非对映异构体。相同的硫化物5和萘基钾提供相同的产品抗,反式和SYN,反式- 6为96:4的混合物。这次,它们是由可逆的蒂格列钾中间体的[1,4]-布鲁克反向重排引起的。©1997爱思唯尔科学有限公司。