Preparation of a New Spirobi[thieno[2,3-c]pyran] and Its Selective Mono- and Dimetalation: Application for the Preparation of Soluble Conjugated Oligothiophenes and Pyrene Derivatives
作者:Paul Knochel、Vasudevan Dhayalan、Fernando Alcañiz、Veronika Werner、Konstantin Karaghiosoff
DOI:10.1055/s-0035-1560187
日期:——
Abstract 3-Thienylacetic acid was converted in six steps into a new spirobi[thieno[2,3-c]pyran] (overall yield: 52%). The spirobi[thieno[2,3-c]pyran] was selectively mono- or dimetalated with butyllithium and then transmetalated with zinc chloride; cross-coupling reaction with various aryl or heteroaryl bromides, including bromo-oligothiophenes, acid chlorides, and 1-bromopyrene, produced the corresponding
摘要 3-噻吩乙酸经六个步骤转化为新的螺双[thieno [2,3- c ] pyran ](总收率:52%)。将螺双[thieno [2,3- c ] pyran]用丁基锂选择性地单金属化或双金属化,然后用氯化锌金属化;与各种芳基或杂芳基溴化物(包括溴-低聚噻吩,酰氯和1-溴py)的交叉偶联反应可高产率产生相应的螺衍生物。 3-噻吩乙酸经六个步骤转化为新的螺双[thieno [2,3- c ] pyran ](总收率:52%)。将螺双[thieno [2,3- c ] pyran]用丁基锂选择性地单金属化或双金属化,然后用氯化锌金属化;与各种芳基或杂芳基溴化物(包括溴-低聚噻吩,酰氯和1-溴py)的交叉偶联反应可高产率产生相应的螺衍生物。