- Nonenzymatic Dynamic Kinetic Resolution of in situ Generated Hemithioacetals: Access to 1,3-Disubstituted Phthalans
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The first nonenzymatic DKR reaction of hemithioacetals is developed. Hemithioacetals were formed in situ via thiol addition and subsequently underwent an intramolecular oxa-Michael reaction. The scope of the reaction was quite broad ranging from aliphatic to aromatic substituents and 1,3-disubstituted-1,3-dihyroisobenzofuran products were obtained in good yields with moderate diastereoselectivities and high enantioselectivities. (Figure presented.).
- Nath, Utpal,Chowdhury, Deepan,Pan, Subhas Chandra
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p. 1628 - 1633
(2018/03/21)
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- One pot rapid synthesis of thiols from alcohols under mild conditions
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Thiols are prepared in high yields from corresponding alcohols using Ph3P, NBS in acetone and followed by addition of polymer supported hydrosulfide under mild condition.
- Bandgar,Sadavarte
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p. 908 - 910
(2007/10/03)
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- Solid Supported Reagents and Reactions. Part 21.1 Rapid and Clean Synthesis of Thiols from Halides Using Polymer-supported Hydrosulfide
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A variety of thiols are prepared from corresponding halides using polymer-supported hydrosulfide in excellent yields. Isolation of pure products by simple filtration and evaporation is an important feature of this method.
- Bandgar, Babasaheb P.,Pawar, Sanjay B.
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p. 212 - 213
(2007/10/03)
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- Sulfur-containing imidazoles
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Novel imidazole mercaptals of the formula STR1 wherein each m is independently zero or one; and R1 and R2 each are independently selected from (lower)alkyl, cycloalkyl, cycloalkyl(lower)alkyl, phenyl, phenyl(lower)alkyl, thienyl, thienyl(lower)alkyl, pyridyl and pyridyl(lower)alkyl, in which the phenyl and heterocyclic rings optionally may contain from 1 to 3 substituents, and acid addition salts thereof, are useful antimicrobial agents.
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