4-disubstituted furans via mono-S-ipso-substitution. The ability of 3-methylthio and 3-phenylthio substituents for directing the metallation at position α-relative to the substituent has allowed the regiospecific alkylation. It provides a straightforward approach to several 3-monothiosubstituted furans which are receiving increasing interest as odour and flavour chemicals.
通过3,4-二
溴呋喃经单-S - ipso-取代转化为3,4-二取代的
呋喃,可以评估其合成潜力。3-甲
硫基和3-苯
硫基取代基指导相对于该取代基的α位上的
金属化的能力允许区域特异性烷基化。它为几种3-一
硫代取代的
呋喃提供了一种简单的方法,这些
呋喃作为气味和风味
化学物质的兴趣越来越高。