126741-70-6Relevant articles and documents
Gold(i)-catalyzed pathway-switchable tandem cycloisomerizations to indolizino[8,7-: B] indole and indolo[2,3-a] quinolizine derivatives
Liu, Chengjun,Sun, Zenghui,Xie, Fukai,Liang, Guoduan,Yang, Lu,Li, Yaqiao,Cheng, Maosheng,Lin, Bin,Liu, Yongxiang
supporting information, p. 14418 - 14421 (2019/12/05)
Experimental and theoretical explorations were performed on the pathways of the cascade cycloisomerizations of tryptamine-N-ethynylpropiolamide substrates. The methodology provided a common strategy to access either indolizino[8,7-b]indoles or indolo[2,3-
Reactivity pattern of bis(propargyloxy) disulfides: Tandem rearrangements and cyclizations
Braverman, Samuel,Pechenick-Azizi, Tatiana,Gottlieb, Hugo E.,Sprecher, Milon
, p. 1741 - 1750 (2011/07/09)
Thirty-five substituted bis(propargyloxy) disulfides were successfully prepared in good to excellent yields, and their reactivity was found to be strongly dependent on the substitution pattern of the reactant. Inter alia they undergo surprising tandem sigmatropic rearrangements and cycloadditions. Three heretofore unknown product types were isolated and fully characterized: 6,7-dithiabicyclo[3.1.1]heptan-2-one 6-oxide derivatives, two isomeric 1,2-dithiete 1,1-dioxides (α,β-unsaturated four-membered cyclic thiosulfonates) from bis(propargyloxy) disulfides with α- or γ-alkyl-substituted propargyl groups, and two isomeric 2-oxa-5,7-dithiabicyclo[2.2.1]heptane 5-oxides from bis(propargyloxy) disulfides with α-tert-butyl- or α,α-dialkyl-substituted propargyl groups. Georg Thieme Verlag Stuttgart - New York.
Reaction of δ-silyl-γ,δ-epoxy-α,β-unsaturated acylsilanes with cyanide ion: Possibility of the formation of silicate intermediate in anion-induced ring opening of epoxysilanes
Tanaka, Koudai,Masu, Hyuma,Yamaguchi, Kentaro,Takeda, Kei
, p. 6429 - 6432 (2007/10/03)
Reaction of trans- and cis-δ-silyl-γ,δ-epoxy-α, β-unsaturated acylsilanes 1 and 9 with cyanide ion in the presence of an electrophile affords double Brook rearrangement products 10 in an E/Z ratio depending on the cis/trans geometry of the epoxysilanes.
