Advanced Carbonyl Synthesis: Acetal Protecting Groups, Wolff-Kishner, Cyanohydrin, Baeyer-Villiger скачать в хорошем качестве

Advanced Carbonyl Synthesis: Acetal Protecting Groups, Wolff-Kishner, Cyanohydrin, Baeyer-Villiger

This college-level organic chemistry video focuses exclusively on five key synthetic strategies using carbonyl compounds (aldehydes and ketones) to build complex molecules and perform functional group transformations. These specialty reactions involving nucleophilic additions will expand your synthesis toolbox. Key Synthesis Strategies Covered: – Acetals as Protecting Groups: Learn how cyclic acetals can protect highly electrophilic carbonyl groups from nucleophilic attack under basic conditions, allowing you to perform other reactions selectively. – Deoxygenation to Alkanes: Explore two functionally similar methods to convert aldehydes and ketones to alkanes: Desulfurization of thioacetals using Raney Nickel, and the Wolff-Kishner reduction. – Cyanohydrin Formation: Discover how cyanide ions are added to aldehydes/ketones to form cyanohydrins, which are intermediates for preparing medically relevant compounds like amino alcohols and alpha-hydroxy carboxylic acids. – Baeyer-Villiger Oxidation: Understand this cool oxidation reaction that converts an aldehyde or ketone into an ester or a carboxylic acid via the insertion of an oxygen atom. Timestamps: 00:00 Introduction to Synthesis Strategies 00:34 Five Key Synthesis Strategies Overview 01:44 Acetals as Carbonyl Protecting Groups 02:16 Protecting the Carbonyl Under Basic Conditions 03:42 Deprotection of Acetals 04:10 Example: Using Acetals to Prevent Undesired Side Reactions 07:00 Desulfurization of Thioacetals to Alkanes 08:04 Wolff-Kishner Reduction (Ketone/Aldehyde to Alkane) 09:23 Cyanohydrin Formation (C-C Bond Formation) 10:30 Reagents for Cyanohydrin Formation 11:07 Synthesis of Amino Alcohols from Cyanohydrins 11:48 Synthesis of Alpha-Hydroxy Carboxylic Acids from Cyanohydrins 12:44 Baeyer-Villiger Oxidation 13:47 Chemoselectivity in Baeyer-Villiger Oxidation 14:15 Selectivity Ordering of Migrating Groups 15:06 Example: Unsymmetrical Ketone Oxidation 16:03 Example: Aldehyde Oxidation to Carboxylic Acid 17:04 Building Your Organic Synthesis Map