Reactions of 3-methyl-2-oxopyrazolidinium ylides with phenylsulfonylacrylonitriles
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Tarih
2015
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A series of methyl oxopyrazolidinium ylides was reacted with (E)-3-(2-hydroxyphenyl)-2-(phenyl-sulfonyl)acrylonitrile and 2-phenylsulfonyl acrylonitrile to give rise to (1R,2S,3S)-5-methyl-7-oxo-1,3-p-substituteddiphenyl-2-(phenylsulfonyl)-hexahydropyrazolo[1,2-a]pyrazole-2-carbonitriles through a sequential reaction accompanying methyl pyrazolone and o-quinone methide releases possibly instead of an anticipated cycloaddition process and 1,3-dipolar cycloaddition route. All the new products were identified by means of spectral/physical characteristics including X-ray diffraction data and HRMS measurements. In addition, a plausible mechanism is proposed for hydroxyphenyl substituted acrylonitrile case. (C) 2015 Elsevier Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
Pyrazolidinium, Azomethine Ylide, Phenylsulfonyl Acrylonitrile
Kaynak
Tetrahedron
WoS Q Değeri
Q2
Scopus Q Değeri
Cilt
71
Sayı
49
