A Rhodium‐Mediated, Stepwise Trimerization of an Alkyne That Does Not Lead to a Benzene but Selectively to a Hexadienyne Derivative | Zendy

Werner Helmut | Zendy; Schäfer Martin | Zendy; Wolf Justin | Zendy; Peters Karl | Zendy; von Schnering Hans Georg | Zendy

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A Rhodium‐Mediated, Stepwise Trimerization of an Alkyne That Does Not Lead to a Benzene but Selectively to a Hexadienyne Derivative

Author(s) -

Werner Helmut,

Schäfer Martin,

Wolf Justin,

Peters Karl,

von Schnering Hans Georg

Publication year - 1995

Publication title -

angewandte chemie international edition in english

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 0570-0833

DOI - 10.1002/anie.199501911

Subject(s) - rhodium , alkyne , chemistry , derivative (finance) , benzene , ether , crystal structure , metal , medicinal chemistry , stereochemistry , catalysis , crystallography , organic chemistry , financial economics , economics

The coupling of an alkynyl and a butadienyl unit at the rhodium center of 1 is the key step in the selective, stepwise trimerization of methyl propiolate HCCR to hexadienyne 3 with [Rh(η 2 ‐O 2 CMe)(P i Pr 3 ) 2 ] as a metal template. In MgCl 2 in ether, this step occurs almost quantitatively, and the intermediates 1 and 2 were characterized by X‐ray crystal structure analysis.

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