89808-15-1Relevant articles and documents
Catalytic Enantioselective Nitroso Diels-Alder Reaction
Maji, Biplab,Yamamoto, Hisashi
supporting information, p. 15957 - 15963 (2016/01/09)
The nitroso Diels-Alder (NDA) reaction is an attractive strategy for the synthesis of 3,6-dihydro-1,2-oxazines and 1-amino-4-hydroxy-2-ene derivatives. Herein we report the Cu(I)-DTBM-Segphos catalyzed asymmetric intermolecular NDA reaction of variously substituted cyclic 1,3-dienes using highly reactive nitroso compounds derived from pyrimidine and pyridazine derivatives. In most of the cases studied, the cycloadducts were obtained in high yields (up to 99%) with very high regio-, diastereo-, and enantioselectivities (up to regioselectivity > 99:1, d.r. > 99:1, and >99% ee). As an application of this methodology, formal syntheses of conduramine A-1 and narciclasine were accomplished.
THE SYNTHESIS AND SOME REACTIONS OF CHLOROPYRIMIDINES
Hurst, Derek T.
, p. 79 - 84 (2007/10/02)
Several chloro-hydroxy- and amino- chloropyrimidines have been prepared.The chloro groups have been replaced by hydrogen, mercapto, or hydroxyamino substituents to give useful synthetic intermediates.