Tetrahedron

Synthesis, crystal structure, and reactivity of new amino-and ammonio-selenuranes containing transannular Se N bond from 5H, 7H-dibenzo [b, g][1, 5] …

H Mima, H Fujihara, N Furukawa

Index: Mima, Hisatomo; Fujihara, Hisashi; Furukawa, Naomichi Tetrahedron, 1998 , vol. 54, # 5-6 p. 743 - 752

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Citation Number: 18

Abstract

The reaction of N-methyl-5H, 7H-dibenzo [b, g][1, 5] selenazocine Se-oxide 2 with SOCl2 gave the chloroammonioselenurane 3b which was further converted into the methyl-or phenyl-substituted ammonioselenurane (4 or 5) upon treatment with Me2CuLi or Ph2CuLi. The X-ray data of 3b and 4 show that the conformations of 3b and 4 are a twist-boat form. The Se N distances are 2.191 Å for 3b and 2.504 Å for 4 which are significantly shorter ...

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