@article {46157, title = {Metal-free, radical 1,6-conjugated addition of cyclic ethers with para-quinone methides (p-QMs)}, journal = {Organic \& Biomolecular Chemistry}, volume = {17}, year = {2019}, month = {MAR}, pages = {3239-3248}, type = {Article}, abstract = {

An efficient method for metal-free C-C bond formation between p-quinone methides (p-QMs) and cyclic ethers via a radical pathway to afford substituted diarylmethanes and triarylmethanes or to effect the -alkylation of the cyclic ethers has been developed. Also, the synthesis of 3,3-disubstituted oxindoles with stereogenic quaternary carbon centers was successfully achieved under mild reaction conditions.

}, issn = {1477-0520}, doi = {10.1039/c9ob00127a}, author = {More, Satish G. and Suryavanshi, Gurunath} } @article {46194, title = {Metal-free regioselective cross dehydrogenative coupling of cyclic ethers and aryl carbonyls}, journal = {Journal of Organic Chemistry}, volume = {84}, year = {2019}, month = {FEB }, pages = {2039-2047}, type = {Article}, abstract = {

A highly regioselective, efficient, and metal-free oxidative cross dehydrogenative coupling (CDC) of aryl carbonyls with cyclic ethers has been developed. This method offers easy access to substituted alpha-arylated cyclic ethers with a high functional group tolerance in good to excellent yields. The regioselectivity of this CDC reaction was confirmed by density functional theory (DFT)-based calculations.

}, issn = {0022-3263}, doi = {10.1021/acs.joc.8b03048}, author = {Mane, Kishor D. and Mukherjee, Anagh and Vanka, Kumar and Suryavanshi, Gurunath} } @article {47640, title = {Metal-free, acid-catalyzed 1,6-conjugate addition of NH-sulfoximines to para-quinone methides: accessing to diarylmethine imino sulfanone}, journal = {Journal of Organic Chemistry}, volume = {86}, year = {2021}, month = {AUG }, pages = {10129-10139}, type = {Article}, abstract = {We have reported an efficient and metal-free method for the construction of alpha-diarylmethine imino sulfanone using acid-catalyzed 1,6-conjugate addition of sulfoximines on para-quinine methides (p-QMs). This method showed broad functional group tolerance and a wide range of substrate scope with good to excellent yield. The excellent protocol exhibits mild reaction conditions with high atom economy. The practicability of the present method was supported by a Gram-scale reaction.}, issn = {0022-3263}, doi = {10.1021/acs.joc.1c00869}, author = {More, Satish G. and Rupanawar, Bapurao D. and Suryavanshi, Gurunath} } @article {48024, title = {Metal-free access to hindered N-alkyl sulfoximines via in-situ generated Aza-oxyallyl cations from functionalized alkyl bromide}, journal = {Asian Journal of Organic Chemistry}, volume = {11}, year = {2022}, month = {JUL}, pages = {e202200210}, type = {Article}, abstract = {

Herein, we report a catalyst-free and mild synthetic method for the construction of hindered N-alkyl sulfoximines derivative. A wide range of hindered di-alkyl sulfoximines can be readily obtained from the reaction of alpha-bromo-hydroxamates with a variety of sulfoximines, including diaryl, aryl-alkyl, di-alkyl and heteroaryl sulfoximines.

}, keywords = {alpha-Bromo hydroxamates, Aza-oxyallyl cations, Di-alkyl sulfoximines, metal-free, Sulfoximines}, issn = {2193-5807}, doi = {10.1002/ajoc.202200210}, author = {More, Satish G. and Mane, Kishor D. and Suryavanshi, Gurunath} }