[EN] SYNTHESIS OF DEUTERATED ALDEHYDES<br/>[FR] SYNTHÈSE D'ALDÉHYDES DEUTÉRÉS
申请人:UNIV ARIZONA
公开号:WO2021045879A1
公开(公告)日:2021-03-11
Described are methods for preparing a deuterated aldehyde using N-heterocyclic carbene catalysts in a solvent comprising D2O. The methods may be used to convert a wide variety of aldehydes (e.g., aryl, alkyl, or alkenyl aldehydes) to C-1 deuterated aldehydes under mild reaction conditions without functionality manipulation.
Cp*Ir(III)-Catalyzed C–H/O–H Functionalization of Salicylaldehydes for the Synthesis of Chromones at Room Temperature
作者:Dhanaji M. Lade、Yogesh N. Aher、Amit B. Pawar
DOI:10.1021/acs.joc.9b01139
日期:2019.7.19
C–H/O–H-bond functionalization of salicylaldehydes with α-diazocarbonyl compounds for the synthesis of chromones under redox-neutral conditions. The reaction proceeds at roomtemperature and displays excellent functional group tolerance along with high yields of the corresponding products. The developed reaction protocol was successfully applied for the late-stage functionalization of estrone derivative
Ruthenium-Catalyzed C–H Activation of Salicylaldehyde and Decarboxylative Coupling of Alkynoic Acids for the Selective Synthesis of Homoisoflavonoids and Flavones
作者:Gabriel Charles Edwin Raja、Ji Yeon Ryu、Junseong Lee、Sunwoo Lee
DOI:10.1021/acs.orglett.7b03325
日期:2017.12.15
Homoisoflavonoids were formed in DMSO exclusively, and flavones were formed in t-AmOH when salicylaldehyde and alkynoicacids reacted with [Ru(p-cymene)Cl2]2 and CsOAc. They were formed through C–H activation of salicylaldehyde and decarboxylative coupling of alkynoicacid. This reaction system showed good yields, broad substrate scope, and good functional group tolerance. It was found that chalcone
Rh-Catalyzed domino synthesis of 4-hydroxy-3-methylcoumarins <i>via</i> branch-selective hydroacylation
作者:Maddali L. N. Rao、Boddu S. Ramakrishna、Sachchida Nand
DOI:10.1039/c9ob01972c
日期:——
A Rh-catalyzed domino synthesis of 4-hydroxy-3-methylcoumarins via branch-selective hydroacylation of acrylates and acrylamides using salicylaldehydes is described.
K<sub>2</sub>S<sub>2</sub>O<sub>8</sub>-Mediated Selective Trifluoromethylacylation and Trifluoromethylarylation of Alkenes under Transition-Metal-Free Conditions: Synthetic Scope and Mechanistic Studies
on and -arylation of alkenes with inexpensive CF3SO2Na and K2S2O8 in aqueous media has been developed, respectively, affording the highly chemoselective synthesis of CF3-functionalized chroman-4-ones and chromanes in satisfactory yields. Control experiments and DFT calculations indicate that the CF3SO2Na/K2S2O8 system is capable of trifluoromethylating the substrate of alkenes without a transition