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Showing papers by "Keiichiro Fukumoto published in 1975"


Journal ArticleDOI
TL;DR: In this article, 5.1-Benzoyl-3,4-dihydroisoquinoline methiodides (13, 14, 15) were converted into 5.5-benzoyl 2,3,dihd-1H-3 -benzazepines (18, 19, 20), respectively, cyclization and reduction of which gave benz[d]indeno[l,2-b]azepine (27, 28, 29).
Abstract: 1-Benzoyl-3,4-dihydroisoquinoline methiodides (13, 14, 15) were converted into 5-benzoyl-2,3-dihydro-1H-3-benzazepines (18, 19, 20), respectively, cyclization and reduction of which gave benz[d]indeno[l,2-b]azepines (27, 28, 29).

14 citations


Journal ArticleDOI
TL;DR: In this paper, the important starting material in a synthesis of pentazocine was easily prepared by treating gaseous formaldehyde with 2-lithio-2-butene.
Abstract: The important starting material in a synthesis of pentazocine (1) was easily prepared by treating gaseous formaldehyde with 2-lithio-2-butene. Both E- and Z-2-bromo-2-butenes (2, 3) gave the same Z...

6 citations