NMR spectra and stereochemistry of 6- and 7-substituted cyclopenta [d][1,3]dioxanes
作者:Trevor A. Crabb、Manuchehr Porssa、Asmita V. Patel、Norman F. Elmore
DOI:10.1002/mrc.1260310113
日期:1993.1
The reaction between 6‐ and 7‐ketocyclopenta[d] [1,3]dioxane and methyl‐phenylmagnesium bromide gave in each case only one isomer of the 6‐hydroxy‐6‐methyl‐phenyl‐ and 7‐hydroxy‐7‐methyl‐phenylcyclopenta [d] [1,3]dioxanes. The configurations of these derivatives were determined from a detailed analysis of the 1H NMR spectra. All the compounds were found to adopt the O‐inside cis‐fused conformations
6-和7-酮环戊[d][1,3]二氧六环和甲基-苯基溴化镁之间的反应在每种情况下只得到6-羟基-6-甲基-苯基-和7-羟基-7-甲基的一种异构体-苯基环戊烷 [d] [1,3] 二恶烷。这些衍生物的构型是通过对 1 H NMR 光谱的详细分析确定的。发现所有化合物均采用 O-inside 顺式融合构象。