Conjugate additions to alkynylalkoxycarbenemetal (Cr or W) complexes

Amadeu Llebaria; Josep M. Moretó; Susagna Ricart; Josep Ros; Josep M. Viñas; Ramón Yáñez

doi:10.1016/0022-328X(92)83486-2

Conjugate additions to alkynylalkoxycarbenemetal (Cr or W) complexes

Amadeu Llebaria, Josep M. Moretó, Susagna Ricart, Josep Ros, Josep M. Viñas, Ramón Yáñez

Department of Chemistry

Research output: Contribution to journal › Article › Research › peer-review

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Abstract

The addition of different nucleophilic compounds (aliphatic and aromatic alcohols, thiols and phosphines) to alkynylalkoxycarbene complexes has been studied. The reaction with smaller nucleophiles proceeds readily and regioselectively at the β-carbene position. With more substituted nucleophiles the reaction rate slowed down considerably. Addition of a catalytic amount of DBU (1,8-di-azabicyclo[5.4.0]undec-7-ene]) speeded up the reaction and improved the E/Z ratio. © 1992.

Original language	English
Pages (from-to)	79-90
Journal	Journal of Organometallic Chemistry
Volume	440
Issue number	1-2
DOIs	https://doi.org/10.1016/0022-328X(92)83486-2
Publication status	Published - 17 Nov 1992

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title = "Conjugate additions to alkynylalkoxycarbenemetal (Cr or W) complexes",

abstract = "The addition of different nucleophilic compounds (aliphatic and aromatic alcohols, thiols and phosphines) to alkynylalkoxycarbene complexes has been studied. The reaction with smaller nucleophiles proceeds readily and regioselectively at the β-carbene position. With more substituted nucleophiles the reaction rate slowed down considerably. Addition of a catalytic amount of DBU (1,8-di-azabicyclo[5.4.0]undec-7-ene]) speeded up the reaction and improved the E/Z ratio. {\textcopyright} 1992.",

author = "Amadeu Llebaria and Moret{\'o}, {Josep M.} and Susagna Ricart and Josep Ros and Vi{\~n}as, {Josep M.} and Ram{\'o}n Y{\'a}{\~n}ez",

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T1 - Conjugate additions to alkynylalkoxycarbenemetal (Cr or W) complexes

AU - Llebaria, Amadeu

AU - Moretó, Josep M.

AU - Ricart, Susagna

AU - Ros, Josep

AU - Viñas, Josep M.

AU - Yáñez, Ramón

PY - 1992/11/17

Y1 - 1992/11/17

N2 - The addition of different nucleophilic compounds (aliphatic and aromatic alcohols, thiols and phosphines) to alkynylalkoxycarbene complexes has been studied. The reaction with smaller nucleophiles proceeds readily and regioselectively at the β-carbene position. With more substituted nucleophiles the reaction rate slowed down considerably. Addition of a catalytic amount of DBU (1,8-di-azabicyclo[5.4.0]undec-7-ene]) speeded up the reaction and improved the E/Z ratio. © 1992.

AB - The addition of different nucleophilic compounds (aliphatic and aromatic alcohols, thiols and phosphines) to alkynylalkoxycarbene complexes has been studied. The reaction with smaller nucleophiles proceeds readily and regioselectively at the β-carbene position. With more substituted nucleophiles the reaction rate slowed down considerably. Addition of a catalytic amount of DBU (1,8-di-azabicyclo[5.4.0]undec-7-ene]) speeded up the reaction and improved the E/Z ratio. © 1992.

U2 - 10.1016/0022-328X(92)83486-2

DO - 10.1016/0022-328X(92)83486-2

M3 - Article

VL - 440

SP - 79

EP - 90

IS - 1-2

ER -

Conjugate additions to alkynylalkoxycarbenemetal (Cr or W) complexes

Abstract

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