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A protecting group-free divergent synthesis of natural benzofurans via one-pot synthesis of 2-bromo-6-hydroxybenzofurans†
Aneesh Sivaraman,Dipesh S. Harmalkar,Jiyoon Kang,Yongseok Choi,Kyeong Lee
Organic & Biomolecular Chemistry Pub Date : 01/24/2019 00:00:00 , DOI:10.1039/C8OB03102A
Abstract

2-Bromo-6-hydroxybenzofurans are potentially versatile intermediates for the divergent synthesis of numerous benzofuran-based natural products and their analogues. Herein we report the first one-pot strategy for the efficient synthesis of 2-bromo-6-hydroxybenzofurans. The present protocol provides shorter routes for the synthesis of moracins M, N, O and P; gramniphenols F and G; and morunigrol C using a protecting group-free approach.

Graphical abstract: A protecting group-free divergent synthesis of natural benzofurans via one-pot synthesis of 2-bromo-6-hydroxybenzofurans
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