Synlett 2020; 31(02): 97-101
DOI: 10.1055/s-0039-1690750
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© Georg Thieme Verlag Stuttgart · New York

Synthesis of Biphenylenes and Their π-Extended Derivatives

Ming-Lun Pan
,
Yao-Ting Wu
This work was supported by the Ministry of Science and Technology of Taiwan (MOST 107-2113-M-006-013-MY3).
Further Information

Publication History

Received: 10 September 2019

Accepted after revision: 30 October 2019

Publication Date:
19 November 2019 (online)


Abstract

A series of biphenylenes and their π-extended derivatives are easily prepared through tert-butyllithium-mediated cyclization of suitable halobiaryls and haloteraryls, respectively. The reactions proceed via the corresponding arynyl intermediates at low temperature (up to –20 °C).