Reduction of Ketones & Aldehydes | NaBH4 vs LiAlH4 | 19.6 Organic Chemistry

Chad provides a comprehensive lesson on the reduction of ketones and aldehydes. He begins with hydride reduction using either sodium borohydride (NaBH4) or lithium aluminum hydride (LiAlH4). The full mechanisms of NaBH4 reduction and LiAlH4 reduction are presented. He also explains the difference in reactivity between the two and the difference in reaction conditions (nabh4 vs lialh4). The lesson is concluded with a novel complete reduction (complete deoxygenation) of aldehydes and ketones by conversion to thioacetals and reduction with hydrogen and Raney nickel.

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00:00 Lesson Introduction
00:41 Introduction to Hydride Reduction
02:23 Reduction Using NaBH4 and LiAlH4 (NaBH4 vs LiAlH4)
03:52 NaBH4 Mechanism of Ketone Reduction
09:17 Reduction of Aldehydes and Ketones via Thioacetals

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