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An SN (anrorc) mechanism in the amino-demethoxylation of 4,6-dimethoxypyrimidines

โœ Scribed by C.A.H. Rasmussen; H.C. van der Plas

Book ID
104246098
Publisher
Elsevier Science
Year
1978
Tongue
French
Weight
128 KB
Volume
19
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

During a recent investigation of the tine-amination of 4-substituted 5-bromopyrimidines by potassium amide in liquid ammonia2 it was observed that !+bromo-4,6_dimethoxypyrimidine (la)3 -

๐Ÿ“œ SIMILAR VOLUMES

Anrorc-mechanism in the amino-deoxogenat
Anrorc-mechanism in the amino-deoxogenation of oxoheterocycles with phenyl phosphorodiamidate
โœ A.P. Kroon; H.C. van der Plas ๐Ÿ“‚ Article ๐Ÿ“… 1974 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 100 KB

It was further observed that on a renewed treatment of 4 with PPDA (235OC, 45 min) 15 N exchange occurs since in the 4\_aminoquinazoline, recovered after the reaction, 2.8% of 15 N is present and in the 4-oxoquinazoline only 1.1% of 15 N. This result indicates that at these conditions a ring opening