作为脱氢、环异构化和歧化反应的结果,用氯化铝处理 [2.2] 间环芳烃会产生多种氢芘。然而,使用二氯化乙基铝时,发生了高度选择性的反应,生成反式-反式-1,2,3,3a,4,5,9,10,10a,10b-十氢芘。基于 13 C NMR 和 X 射线晶体学分析,提出了针对顺-顺-和反-反-十氢芘的修订结构。
Microbial stereodifferentiating reduction of (.+-.)-4-methyl- and (.+-.)-6-methyl-1-oxo[2.2]metacyclophanes and revision of the absolute configuration of 4-substituted [2.2]metacyclophanes
MICROBIAL STEREODIFFERENTIATING REDUCTION OF (±)-4-METHYL-1-OXO[2.2]METACYCLOPHANE AND REVISION OF THE ABSOLUTE CONFIGURATION OF 4-SUBSTITUTED [2.2]METACYCLOPHANES
The (−)-Cotton effect indicates (pS)-configuration to (−)-4-methyl-1-oxo[2.2]metacyclophane (17) which was isolated from a culture solution of (±)-14 with Rhodotorula rubra, and the conversion of (−)-17 to (+)-4-methyl[2.2]metacyclophane (21) via 19 assigns (pR)-configuration to (+)-21, contrary to Schlogl’s proposal.