作者:Nina A Nedolya、Nataly I Schlyakhtina、Valentina P Zinov'eva、Alexander I Albanov、Lambert Brandsma
DOI:10.1016/s0040-4039(02)00017-5
日期:2002.2
Reaction of 1-lithiated methoxyallene and lithiated 3-methyl-1,2-butadiene with isocyanates, RNCO (R=alkyl) followed by hydrolysis affords the dienamides H2CCC(OCH3)C(O)NHR and (CH3)2CCCHC(O)NHR, respectively, in good to excellent yields. Cyclization to 2-(5H)-furanylidenamines or mixtures of these compounds with 1,5-dihydro-2H-pyrrol-2-ones can be achieved with silver acetate or silver nitrate
1-锂化methoxyallene的反应和锂化的3-甲基-1,2-丁二烯与异氰酸酯,RNCO接着水解(R =烷基),得到dienamidesħ 2 CCC(OCH 3)C( O)NHR和(CH 3)2 CCCHC(O)NHR,分别在良好至优异的产量。用乙酸银或硝酸银的丙酮溶液可以环化成2-(5 H)-呋喃基亚胺或这些化合物与1,5-二氢-2 H-吡咯-2-酮的混合物。