Trabeculoplasty
发表于 2025-3-23 12:28:23
Level 1 — Case 10 Nucleophile Versus Base Catalysisechanisms for amine-catalyzed reactions of carbonyl compounds involve acylium ion and ketene intermediates (the latter can only occur for acid halides containing α-hydrogens), but the actual role of the catalyst is still uncertain.
fibroblast
发表于 2025-3-23 16:19:26
nd thermodynamic data, isotopic labelling and organic reactivity. The book makes an excellent primer for advanced undergraduates in chemistry who are preparing for exams and is also useful for graduate students and instructors..978-3-642-62292-2978-3-642-18788-9
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观察
发表于 2025-3-25 00:16:25
Level 2 — Case 19 Chelate-Controlled Carbonyl Addition Reactions SnCl. was employed, aldols . were obtained preferentially with selectivities higher than 95:5. Instead, the stereoisomers . were isolated with nearly total stereoselectivity when Me.AlCl (2 eq) was used to promote the reaction (Scheme 19.1a and b)..