Hypoiodous acid initiated rearrangement of tertiary propargylic alcohols to α-iodoenones
作者:Wesley J. Moran、Arantxa Rodríguez
DOI:10.1039/c2ob26360b
日期:——
In the presence of an oxidant, sodium iodide is converted into hypoiodous acid which effects the rearrangement of tertiary propargylic alcohols to α-iodoenones in good yields.
Oxidative Rearrangement of Tertiary Propargylic Alcohols
作者:Arantxa Rodríguez、Wesley Moran
DOI:10.1055/s-0032-1317711
日期:——
An oxidative rearrangement of tertiaryalcohols mediated by m-CPBA is described that generates tetrasubstituted alkenes with a carboxylic acid substituent. The mechanism of the reaction is proposed to proceed through epoxidation of the alkyne to form an oxirene that undergoes a 1,2-aryl shift.
A highly enantioselective α‐ketol rearrangement has been developed. In the presence of a chiral Cu‐bisoxazoline complex, achiral β‐hydroxy‐α‐dicarbonyls were isomerized to chiralα‐hydroxy‐β‐dicarbonyls and their bicyclic derivatives in excellent yields and enantioselectivities. Enantioenriched 2‐acyl‐2‐hydroxy cyclohexan‐1‐ones, dihydroxyhexahydrobenzofuranones, and dihydroxyhexahydro‐cycloheptafuranones
Rhodium(III)-Catalyzed [4 + 2] Annulation of <i>N</i>-Arylbenzamidines with Propargyl Alcohols: Highly Regioselective Synthesis of 1-Aminoisoquinolines Controlled by Noncovalent Interaction
作者:Jie Ren、Chao Pi、Xiuling Cui、Yangjie Wu
DOI:10.1021/acs.orglett.1c02077
日期:2021.9.3
A highly regioselective synthesis of 1-aminoisoquinolines has been explored via rhodium(III)-catalyzed C–H bond activation/annulation reactions of propargyl alcohols with N-arylbenzamidines. The imidamide was used as the directing group and the nitrogen source of the heterocycle and for regulating the regioselective migratory insertion of propargyl alcohol through a hydrogen bond. In this transformation
Reactions of tertiary propargyl alcohols with sodium halides under oxidative conditions
作者:Marwa M. Aborways、Wesley J. Moran
DOI:10.1016/j.tetlet.2014.02.042
日期:2014.3
The study of the reactions of tertiary propargyl alcohols with sodiumhalidesunder oxidative conditions is presented. With sodium iodide, α-iodoenones were formed, however, with sodium bromide or chloride the α-haloenones were only formed in low yields under anhydrous conditions. Conversely, upon addition of water to the reaction mixtures, α,α-dibromoketones and α,α-dichloroketones were formed in