(ω-Ammonioalkyl)cyclopentadienides by Rhodium-Catalyzed Vinylcarbene Transfer to Semicyclic Enaminocarbonyl Compounds
摘要:
The rhodium(ll) catalyzed reaction of vinyldiazoacetate 2 with semicyclic beta-enaminocarbonyl compounds 1 provides (omega-(methylammonio)-alkyl)cyclopentadienides 3. This transformation represents a novel reaction cascade which combines carbenoid addition at a C=C bond with ring chain transformation. In some cases, products resulting from vinylcarbene insertion into the enaminic C-H bond of 1 are also isolated, These dienamines undergo subsequent isomerization to furnish betaines 3.
A direct synthesis of [(tert-butoxycarbonyl)methylidene]azacycloalkanes
作者:Masahiko Yamaguchi、Ichiro Hirao
DOI:10.1021/jo00211a038
日期:1985.5
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作者:GUGELCHUK, M. M.、HART, D. J.、TSAI, YEUN-MIN
DOI:——
日期:——
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作者:CELERIER, J. P.、RICHAUD, M. G.、LHOMMET, G.
DOI:——
日期:——
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作者:YAMAGUCHI, MASAHIKO、HIRAO, ICHIRO
DOI:——
日期:——
(ω-Ammonioalkyl)cyclopentadienides by Rhodium-Catalyzed Vinylcarbene Transfer to Semicyclic Enaminocarbonyl Compounds
作者:Gerhard Maas、Andreas Müller
DOI:10.1021/ol990546u
日期:1999.7.1
The rhodium(ll) catalyzed reaction of vinyldiazoacetate 2 with semicyclic beta-enaminocarbonyl compounds 1 provides (omega-(methylammonio)-alkyl)cyclopentadienides 3. This transformation represents a novel reaction cascade which combines carbenoid addition at a C=C bond with ring chain transformation. In some cases, products resulting from vinylcarbene insertion into the enaminic C-H bond of 1 are also isolated, These dienamines undergo subsequent isomerization to furnish betaines 3.