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Unprecedented Formation of Five‐, Six‐, and Seven‐Membered Metallacycles by Single and Double Insertion of Mono‐ and Disubstituted Alkynes into an Rh−O Bond
Author(s) -
Yamamoto Yasuhiro,
Han XiaoHong,
Ma JianFang
Publication year - 2000
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20000602)39:11<1965::aid-anie1965>3.0.co;2-k
Subject(s) - chemistry , ligand (biochemistry) , stereochemistry , double bond , migratory insertion , polymer chemistry , catalysis , organic chemistry , receptor , biochemistry
The novel tridentate ligand in 1 was generated by head‐to‐head coupling and double insertion of PhC≡CH into the Rh−O bond of [( η 5 ‐C 5 Me 5 )RhCl{PPh 2 (2‐O‐6‐MeOC 6 H 3 )}]. Propargylic esters (Me, Et) undergo single insertion to give seven‐membered metallacycles.