Chemistry Letters p. 213 - 216 (1981)
Update date:2022-08-02
Topics:
Tsuge, Otohiko
Shirashi, Hidehiko
Noguchi, Michihiko
1,3-Diphenylthiazolo<3,4-a>benzimidazole (1) containing tetravalent sulfur reacts as a thiocarbonyl ylide dipole with 6,6-diphenylfulvene to give a mixture of two regioisomeric exo-<4 + 2> adducts and endo-<4 + 2>adduct.The reaction of 1 with tropone and 8,8-dicyanoheptafulvene proceeds via a <4 + 2> cycloaddition to the C4-C5 and C1-C2 bond of the addend to afford the exo-adduct and desulfurized compound respectively.
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Doi:10.1246/bcsj.54.1101
(1981)Doi:10.1021/ja00400a039
(1981)Doi:10.1039/d0cc01636e
(2020)Doi:10.1248/cpb.29.699
(1981)Doi:10.1021/jo049114+
(2004)Doi:10.1021/ja0464239
(2004)
