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Hetero-Diels-Alderreaction of some 1,3-diaza-1,3-butadienes with ketenes. Synthesis of functionalized pyrimido[1,2-b]-benzothiazoles and 1,3,4-thiadiazolo-[3,2-a]pyrimidines

✍ Scribed by K. Bogdanowicz-Szwed; M. Krasodomska


Book ID
104950453
Publisher
Springer Vienna
Year
1996
Tongue
English
Weight
518 KB
Volume
127
Category
Article
ISSN
0026-9247

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Synthesis of pyrimidines from 2-trichlor
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2-Trichloromethyl-4-dimethylamino-1,3-diaza-l,3-butadienes(3),prepared from trichlomacetamidme(1) and amide acetals 2, readily react with electron d&ie.nt acetylenes 4 to give 2-trichloromethylpyrimidines 5.