WebFeb 28, 2024 · The reaction of (R)-N-benzyl-2-phenylglycinol (42) with 3,4-dimethoxyphenylboronic acid (38) and glyoxylic acid monohydrate (39) led to two diastereomeric oxazinones 43 and 44 in 98% yield with 58:42 d.r., which were easily separated by column chromatography . WebJul 27, 2024 · 手性叔胺催化不对称串联反应构建氧化吲哚螺环化合物的研究近年来，有机小分子催化的串联反应已成为众多有机化学家们的研究热点，是合成手性化合物的有效方法。
Aluminium and gallium compounds of salicyclic and anthranilic …
WebSalinazinones A (1) and B (2), two unprecedented pyrrolidinyl-oxazinones, were isolated from the culture broth of Streptomyces sp. KMF-004 from a solar saltern at Aphae Island, … WebOptically pure 4, 5-dimethyl-3, 6-diphenylperhydro-1, 4-oxazin-2-one and 4, 5-dimethyl-6-phenyl-3(2-phenylvinyl) perhydro-1, 4-oxazin-2-one have been prepared by … is sledding a sport
Intermolecular reacitons of N-alkoxycarbonyliminium ions with ...
WebIntermolecular reactions of N-alkoxycarbonyliminium ions with propargyltrimethylsilane mainly lead to 6-(trimethylsilyl)methyl-3,4-dihydro-2H-1,3-oxazinones, formed by intramolecular trapping of a stabilized β-silyl vinylic cation. α-Allenyl carbamates are obtained as minor products. The oxazinone/allene ratio is dependent on the nature of the … WebDec 13, 2024 · Herein, we present the [8+3]-cycloaddition reaction of tropones with in situ generated azaoxyallyl cations allowing the one-step construction of cycloheptatriene-fused 1,4-oxazinones in moderate to good yields. This base-promoted new carbon-oxygen and carbon-nitrogen bond-forming reaction takes place under mild conditions in the absence … WebOxazinone C4H5NO2 CID 21873527 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety ... is sled american