Photo-on-Demand Phosgenation Reactions with Chloroform for Selective Syntheses of N-Substituted Ureas and Isocyanates
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DOI: 10.1021/acsomega.1c07132
Abstract: Two new reaction processes involving the in situ oxidative photochemical conversion of CHCl3 to COCl2 allowed selective syntheses of N-substituted ureas and isocyanates from amines. (I) A CHCl3 solution containing an amine and an organic… read more here.
Keywords: selective syntheses; organic base; ureas isocyanates; substituted ureas ... See more keywords
Selective syntheses of diversely substituted 2-hydroxy-4′-hydroxybenzophenones through [4 + 2] or [3 + 3] annulation of penta-3,4-dien-2-ones with 3-formylchromones
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DOI: 10.1039/c7qo00366h
Abstract: A selective synthesis of 2-hydroxy-4′-hydroxybenzophenones or their 3′-acylated counterparts through the cascade reactions of 3-formylchromones with diversely substituted penta-3,4-dien-2-ones is presented. Mechanistically, the formation of the title compounds involves either an unprecedented [4 + 2]… read more here.
Keywords: annulation; hydroxy hydroxybenzophenones; dien ones; selective syntheses ... See more keywords
An Efficient Method for Selective Syntheses of Sodium Selenide and Dialkyl Selenides
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DOI: 10.3390/molecules27165224
Abstract: The studies on the selective synthesis of dialkyl selenide compounds 1 were presented. Overcoming the complexity and difficulty of selenides (R-Se-R) and/or multiselenides (R-Sen-R; n ≥ 2), we aimed to optimize the reaction condition for… read more here.
Keywords: method selective; selective syntheses; dialkyl selenides; efficient method ... See more keywords