作者:Thomas Köhler、Jürgen Faderl、Hans Pritzkow、Walter Siebert
DOI:10.1002/1099-0682(200211)2002:11<2942::aid-ejic2942>3.0.co;2-p
日期:2002.11
The reaction of (isopropyloxy)bis(2-thienyl)borane (1d) with Grignard reagents leads to methylbis(2-thienyl)borane (1e) and to phenylbis(2-thienyl)borane (1f). Treatment of monolithiated heterocycles with dichloroboranes yields the bis(2-heteroaryl)boranes 1b, 1c, and 3a, which are dibrominated with NBS to give the 5,5′-dibromo products 1b′, 2a′, and 3a′. NMR spectroscopic and MS data confirm the composition
(异丙氧基)双(2-噻吩基)硼烷(1d)与格氏试剂反应生成甲基双(2-噻吩基)硼烷(1e)和苯基双(2-噻吩基)硼烷(1f)。用二氯硼烷处理单锂杂环产生双(2-杂芳基)硼烷 1b、1c 和 3a,它们用 NBS 进行二溴化得到 5,5'-二溴产物 1b'、2a' 和 3a'。NMR光谱和MS数据证实了化合物的组成。如 HR-MS 数据所证实,二溴衍生物的 [2+2] 环化在 2a' 的情况下产生大环 4b。(© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)