首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Carbon-13 nuclear magnetic resonance spectra: III—2-heteroadamantanes
Authors:Helmut Duddeck  Peter Wolff
Abstract:The 13C n.m.r. spectra of some 2-heteroadamantanes and 1-substituted 2-heteroadamantanes are reported. The influences of the heteroatoms in the adamantane framework, and those of the substituents attached to it, on the 13C chemical shifts of the adamantane carbons are investigated and compared with related compounds such as the corresponding heterocyclohexane derivatives and 2-mono- and 2,2-disubstituted adamantanes. The nonadditivity of the substituent effects for 1-substituted 2-heteroadamantanes, especially for the geminally substituted carbons, is substantially confirmed. In addition, the influences of a missing CH2 group and of NCH3 carbons upon the 13C chemical shifts of the carbons in the adamantane system are described.
Keywords:
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号