@article { ISI:000301936700004,
	title = {Environmentally benign synthesis of beta-hydroxy sulfides using cyclic carbonates catalyzed by large-pore zeolites},
	journal = {Green Chemistry Letters and Reviews},
	volume = {5},
	number = {1},
	year = {2012},
	month = {AUG},
	pages = {19-26},
	publisher = {TAYLOR \& FRANCIS LTD},
	address = {4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND},
	abstract = {<p>An efficient one-pot synthesis of beta-hydroxy sulfides from thiophenol and cyclic carbonates catalyzed by large-pore zeolites has been reported. Reaction of thiophenol with ethylene carbonate in the presence of the Na-X zeolite catalyst gave the highest yield of 2-(phenylthio)ethanol (100\%), while reaction with propylene carbonate a highest yield of regioselective product 1-(phenylthio)propan-2-ol was obtained (97\%). Enantiomerically pure 1,2-propylene carbonate gave highly regioselective and stereospecific phenylthiopropanol, demonstrating that original chirality of propylene carbonate is retained. A plausible mechanism has been proposed for zeolite-catalyzed transformation involving a chemoselective nucleophilic attack of thiophenoloxide ion onto the less-substituted carbon of cyclic carbonate. The Na-X zeolite catalyst is recyclable and provides advantages of green chemistry approach to the synthesis of beta-hydroxy sulfides without the use of any solvent.</p>},
	keywords = {beta-hydroxy sulfide, ethylene carbonate, propylene carbonate, thiophenol, zeolite},
	issn = {1751-8253},
	doi = {10.1080/17518253.2011.574295},
	author = {Upare, Pravin P. and Kinage, Anil K. and Shingote, Savita K. and Gupte, Sunil P.}
}
@article {49300,
	title = {Methanesulfonic acid-catalyzed friedel-crafts alkylation: towards sustainable synthesis of arylalkanes from donor-acceptor cyclopropane ketones},
	journal = {Asian Journal of Organic Chemistry},
	volume = {13},
	year = {2024},
	month = {JUL},
	type = {Article},
	abstract = {<p>
	We present herein Br \&amp; oslash;nsted acid-catalyzed Friedel-Crafts alkylation of phenols with Donor-Acceptor cyclopropane ketones. The presence of the 1,4-diphenyl butan-1-one and 1,3-diphenyl propane-1-one motifs in various naturally occurring biologically significant molecules inspired us to pursue the direct synthesis of these structural frameworks. Utilizing methanesulfonic acid (MeSO3H) as a catalyst, we achieved a more environmentally friendly and high-yielding synthesis, owing to its cost-effectiveness, biodegradability, transition-metal and additives free conditions. Furthermore, we have successfully extended our developed methodology to thiophenols, resulting in the production of sulfur-based butan-1-one derivatives in good yields. The presence of 1,4-diphenyl butan-1-one and 1,3-diphenyl propane-1-one motifs in various naturally occurring biologically significant molecules prompted us to develop a Br \&amp; oslash;nsted acid-catalyzed Friedel-Crafts alkylation of phenols with Donor-Acceptor cyclopropane. image</p>
},
	keywords = {donor-acceptor cyclopropane, Friedel-Crafts alkylation, methanesulfonic acid, Phenols, thiophenol},
	issn = {2193-5807},
	doi = {10.1002/ajoc.202400116},
	author = {Goswami, Lakshmi and Paul, Sayantan and Mamale, Ajay G. and Gonnade, Rajesh G. and Bhattacharya, Asish K.}
}
