ISSN:
0009-2940
Keywords:
Olefin formation
;
Pyrimido[6,1-α]isoquinolines
;
4-Aminopyrimidines
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
On heating at 100°C, 1,2,3,4-tetrahydro-6,7-dialkoxy-1-[(acylamidino)methylene]isoquinolines (5) are transformed into 4-substituted 6,7-dihydro-9,10-dialkoxy-2H-pyrimido[6,1-α]isoquinoline-2-imines (6), while at 140°C they undergo a novel prototropic rearrangement via 6 to give 4-amino-6-(4,5-dialkoxy-2-vinylphenyl)-2-phenylpyrimidines (7). The structure of 7a has been determined by X-ray analysis.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19911240119