Organolanthanide-catalyzed cyclodimerizations of disubstituted alkynes

H. J. Heeres; A. Heeres; J. H. Teuben

doi:10.1021/om00119a023

Organolanthanide-catalyzed cyclodimerizations of disubstituted alkynes

H. J. Heeres, A. Heeres, J. H. Teuben

Biobased Ingredients and Materials

Onderzoeksoutput: Article › Academic › peer review

Samenvatting

The lanthanide alkyls Cp 2 *LnCH(SiMe 3 ) 2 (Ln = La, Ce) are efficient catalysts for the cyclodimerization of 2-alkynes MeC≡CR (R = Me, Et, n-Pr) to 1,2-disubstituted 3-alkylidenecyclobutenes. The first step in the reaction is a propargylic metalation of the α-methyl group, giving Cp* 2 LnCH 2 C≡CR compounds and free CH 2 (SiMe 3 ) 2 . © 1990, American Chemical Society. All rights reserved.

Originele taal-2	English
Pagina's (van-tot)	1508-1510
Tijdschrift	Organometallics
Volume	9
Nummer van het tijdschrift	5
DOI's	https://doi.org/10.1021/om00119a023
Status	Published - 1990

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10.1021/om00119a023

http://www.mendeley.com/research/organolanthanidecatalyzed-cyclodimerizations-disubstituted-alkynes

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Citeer dit

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title = "Organolanthanide-catalyzed cyclodimerizations of disubstituted alkynes",

abstract = "The lanthanide alkyls Cp 2 *LnCH(SiMe 3 ) 2 (Ln = La, Ce) are efficient catalysts for the cyclodimerization of 2-alkynes MeC≡CR (R = Me, Et, n-Pr) to 1,2-disubstituted 3-alkylidenecyclobutenes. The first step in the reaction is a propargylic metalation of the α-methyl group, giving Cp* 2 LnCH 2 C≡CR compounds and free CH 2 (SiMe 3 ) 2 . {\textcopyright} 1990, American Chemical Society. All rights reserved.",

author = "Heeres, {H. J.} and A. Heeres and Teuben, {J. H.}",

year = "1990",

doi = "10.1021/om00119a023",

language = "English",

volume = "9",

pages = "1508--1510",

journal = "Organometallics",

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publisher = "American Chemical Society",

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TY - JOUR

T1 - Organolanthanide-catalyzed cyclodimerizations of disubstituted alkynes

AU - Heeres, H. J.

AU - Heeres, A.

AU - Teuben, J. H.

PY - 1990

Y1 - 1990

N2 - The lanthanide alkyls Cp 2 *LnCH(SiMe 3 ) 2 (Ln = La, Ce) are efficient catalysts for the cyclodimerization of 2-alkynes MeC≡CR (R = Me, Et, n-Pr) to 1,2-disubstituted 3-alkylidenecyclobutenes. The first step in the reaction is a propargylic metalation of the α-methyl group, giving Cp* 2 LnCH 2 C≡CR compounds and free CH 2 (SiMe 3 ) 2 . © 1990, American Chemical Society. All rights reserved.

AB - The lanthanide alkyls Cp 2 *LnCH(SiMe 3 ) 2 (Ln = La, Ce) are efficient catalysts for the cyclodimerization of 2-alkynes MeC≡CR (R = Me, Et, n-Pr) to 1,2-disubstituted 3-alkylidenecyclobutenes. The first step in the reaction is a propargylic metalation of the α-methyl group, giving Cp* 2 LnCH 2 C≡CR compounds and free CH 2 (SiMe 3 ) 2 . © 1990, American Chemical Society. All rights reserved.

U2 - 10.1021/om00119a023

DO - 10.1021/om00119a023

M3 - Article

VL - 9

SP - 1508

EP - 1510

JO - Organometallics

JF - Organometallics

SN - 0276-7333

IS - 5

ER -