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Zenichi Yoshida (1925-2023)
Zenichi Yoshida (1925-2023)
Professor. Zenichi Yoshida,
a member of the Honorary Advisors of HETEROCYCLES (1975-1998),
has passed away on May 4, 2023 at the age of 97.
I deeply express my regret over his death.
Kunio Ogasawara
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May 11, 2023
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Paper | Regular issue | Vol 27, No. 8, 1988, pp.1867-1871
Published online, 1st January, 1970■ Synthesis of 2-Alkylpyrimidines via 2-Alkyl-1,4,5,6-tetrahydropyrimidines
Published online, 1st January, 1970
DOI: 10.3987/COM-88-4530
■ Synthesis of 2-Alkylpyrimidines via 2-Alkyl-1,4,5,6-tetrahydropyrimidines
Richard Garth Pews*
*Organic Specialties Laboratory, Central Research, The Dow Chemical Company, 1776 Building, Midland, Michigan 48674, U.S.A.
Abstract
The condensation of 1,3-diaminopropane with alkanoic acids gives 2-alkyl-1,4,5,6-tetrahydropyrimidines. Dehydrogenation of the tetrahydropyrimidine derivatives over a palladium catalyst produces the 2-alkylpyrimidines in high yields.
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