Formation of Tertiary Amides and Dihydrogen by Dehydrogenative Coupling of Primary Alcohols with Secondary Amines Catalyzed by Ruthenium Bipyridine‐Based …

D Srimani, E Balaraman, P Hu… - Advanced Synthesis …, 2013 - Wiley Online Library
Advanced Synthesis & Catalysis, 2013Wiley Online Library
Dehydrogenative coupling of primary alcohols with secondary amines to form tertiary
amides and dihydrogen (H2) is efficiently catalyzed by bipyridyl‐based ruthenium pincer
complexes (0.2–1 mol%) under neutral conditions (in case of the dearomatized complexes),
or with added catalytic amount of base. The reaction is sensitive to steric hindrance; in the
case of amidation of bulky secondary amines a less sterically hindered complex is more
efficient. Selective acylation of primary amines in the presence of secondary amines was …
Abstract
Dehydrogenative coupling of primary alcohols with secondary amines to form tertiary amides and dihydrogen (H2) is efficiently catalyzed by bipyridyl‐based ruthenium pincer complexes (0.2–1 mol%) under neutral conditions (in case of the dearomatized complexes), or with added catalytic amount of base. The reaction is sensitive to steric hindrance; in the case of amidation of bulky secondary amines a less sterically hindered complex is more efficient. Selective acylation of primary amines in the presence of secondary amines was also demonstrated.
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