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Yoshito Kishi (1937-2023)
Yoshito Kishi (1937-2023)
Professor. Yoshito Kishi,
a member of the Honorary Editorial Associates of HETEROCYCLES,
has passed away on January 9, 2023 at the age of 85.
I deeply express my regret over his death.
Kunio Ogasawara
Editor
January 13, 2023
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Report | Regular issue | Vol 24, No. 12, 1986, pp.3369-3372
Published online, 1st January, 1970■ A Cyclisation Reaction of 2-Cyanomethylbenzothiazole with Acetylenic Compounds via Michael Addition
Published online, 1st January, 1970
DOI: 10.3987/R-1986-12-3369
■ A Cyclisation Reaction of 2-Cyanomethylbenzothiazole with Acetylenic Compounds via Michael Addition
Dilip Konwar, Romesh Chandra Boruah, and Jagir Singh Sandhu*
*Division of Drug and Pharmaceutical Chemistry, Regional Research Laboratory, Jorhat 785 006, Assam, India
Abstract
2-Cyanomethylbenzothiazole (1) reacts with acetylenic compounds (2) under the influence of base in Michael fashion followed by cyclisation to afford fused pyrido[2,1-b]benzothiazole (3&4) in excellent yields. The products were characterized through elemental and spectral analyses.
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