The Isomers of the Hydrogenation Products of Bisphenol A. The Separations and Configurations of Three Isomers of 2,2-Bis-(4-hydroxycyclohexyl)propane and Two of 2-(4-Hydroxycyclohexyl)-2-(<i>p</i>-hydroxyphenyl)propane
作者:Akira Terada
DOI:10.1246/bcsj.39.2194
日期:1966.10
Hydrogenations of bisphenol A (I) over Raney nickel (W-1) and Urushibara nickel A and B have been carried out, and three stereoisomers of 2,2-bis(4-hydroxycyclohexyl)propane (II) and two of 2-(4-hydroxycyclohexyl)-2-(p-hydroxyphenyl)propane (III) have been isolated from the products. The configurations and the preferred conformations of the II isomers, cis-cis (m. p. 174–175°C), cis-trans (164–165
双酚 A (I) 在 Raney 镍 (W-1) 和 Urushibara 镍 A 和 B 上的氢化已经进行,并且 2,2-双(4-羟基环己基)丙烷 (II) 的三种立体异构体和 2-( 4-羟基环己基)-2-(对羟基苯基)丙烷(III)已从产物中分离出来。II 异构体、cis-cis (mp 174–175°C)、cis-trans (164–165.5°C) 和 trans-trans (188–189°C) 以及 III 异构体的构型和优选构象、顺式 (159–161°C) 和反式 (150.5–151.5°C) 已通过红外和核磁共振光谱、钠转化为稳定异构体和其他方法确定。当与纯化的甲醇一起加热时,由 II 的异构混合物的三氧化铬氧化制备的 2,2-双(4-酮环己基)丙烷得到 2,2-双(4,4-二甲氧基环己基)丙烷,mp 140。5–141.5°C。IIIt从苯中重结晶得到IIIt