Facile addition of methyl lithium to a 4-vinylpyridine system
作者:David Miller
DOI:10.1002/jhet.5570210420
日期:1984.7
The rapid addition of methyl lithium to the 4-vinylpyridine system present in 4-2,6-dihydroxy-4-(3-methyl-2-octyl)phenyl}-2-methyl-4-(4-pyridyl)but-3-en-2-ol (2) is reported. The α and β-4-2,6-dihydroxy-4-(3-methyl-2-octyl)phenyl}-2,3-dimethyl-4-(4-pyridyl)butan-2-ols 4 and 5 formed, are cyclised by heating with 5N hydrochloric acid to trans and cis-3,4-dihydro-5-hydroxy-7-(3-methyl-2-octyl)-4-(4-pyridyl)-2
快速将甲基锂添加到4- 2,6-二羟基-4-(3-甲基-2-辛基)苯基} -2-甲基-4-(4-吡啶基)但存在于4- 2,6-二羟基-4-(3-甲基-2-辛基)苯基} -2-甲基吡啶中的4-乙烯基吡啶体系中报告了3-烯-2-醇(2)。α和β-4- 2,6-二羟基-4-(3-甲基-2-辛基)苯基} -2,3-二甲基-4-(4-吡啶基)丁-2-醇4和5形成的中,通过加热,用5环化ñ盐酸以反式与顺式-3,4-二氢-5-羟基-7-(3-甲基-2-辛基)-4-(4-吡啶基)-2,2,3- -三甲基-2 H -1-苯并吡喃6和7。