Acceptorless dehydrogenative coupling reactions with alcohols over heterogeneous catalysts. Issue 13 (24th May 2018)

• Record Type: Journal Article
• Authors: Hakim Siddiki, S. M. A.; Toyao, Takashi; Shimizu, Ken-ichi
• Is Part Of: Green chemistry. Volume 20:Issue 13(2018)
• Page Start: 2933
• Page End: 2952
• Publication Date: 2018-05-24
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/c8gc00451j
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Recent examples for the acceptorless dehydrogenative coupling reactions of alcohols over heterogeneous catalysts for the one-pot synthesis of value-enhanced chemicals are reviewed. Abstract : Heterogeneous catalysis for the one-pot synthesis of added-value chemicals is a growing area in green chemistry. Among various types of organic transformations that are accessible by this approach, acceptorless dehydrogenative coupling (ADC) reactions have been established as efficient processes that generate various classes of organic compounds via the formation of C–O, C–N, C–S, C–C, and CC bonds. In this review, we summarize recent developments on the one-pot synthesis of organic compounds that are driven by the dehydrogenation of alcohols promoted by supported transition-metal catalysts in the absence of hydrogen acceptors. A major feature of the design of such catalysts is the cooperation between the metal sites and the acid and/or base sites on the metal–oxide supports. Recent examples for the organometallic catalysis of ADC reactions of alcohols are presented and their efficiency is put into contrast with that of related reactions carried out using conventional supported transition-metal catalysts. Finally, aspects pertaining to the mechanism and catalyst design of these new ADC reactions are discussed in the context of directions for future developments in this area.