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Cover Feature: Fusing Carborane Carboxylic Acids with Alkynes: 3D Analogues of Isocoumarins via Regioselective B−H Activation (Chem. Eur. J. 3/2018)
Author(s) -
Lin Furong,
Shen Yunjun,
Zhang Yuanbin,
Sun Yuji,
Liu Jiyong,
Duttwyler Simon
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201704733
Subject(s) - isocoumarins , regioselectivity , annulation , chemistry , carborane , ring (chemistry) , stereochemistry , combinatorial chemistry , catalysis , organic chemistry
The preparation of a new class of heterocycles is reported. Fusion of carborane carboxylic acids with alkynes leads to three‐dimensional bora‐analogues of isocoumarins. The procedure relies on an iridium‐catalyzed alkenylation/annulation sequence between monocarba‐ closo ‐dodecaborate clusters and diarylacetylenes. Regioselective B−H activation, followed by B−C bond formation and ring closure, affords the fused cyclized products. More information can be found in the Communication by S. Duttwyler et al. on page 551.