Efficient synthesis of N-acylarenesulfenamides by acylation of arenesulfenamides
摘要:
Acylation of arenesulfenamides proceeds efficiently by using either perfluorocarboxylic anhydrides or acid chlorides in the presence of pyridine as a base at low temperatures to give N-acylarenesulfenamides. Some N-alkylcarbonyl derivatives exist with imidic acid tautomers in an aprotic solvent. (C) 2003 Elsevier Science Ltd. All rights reserved.
Synthesis of N-Acylsulfenamides from Amides and N-Thiosuccinimides
作者:Jessica T. Liu、Daniel S. Brandes、Jonathan A. Ellman、Nathaniel S. Greenwood
DOI:10.1055/s-0041-1738430
日期:——
recently been utilized as central inputs for the asymmetric synthesis of high oxidation state sulfur compounds. This straightforward transformation proceeds by reaction of primary amides, carbamates, sulfonamides, sulfinamides, and ureas with stable N-thiosuccinimides or N-thiophthalimides, which in turn are prepared in a single step from commercial thiols. The use of stable N-thiosuccinimide and N-thiophthalimide
Sulfur-Arylation of Sulfenamides via Chan–Lam Coupling with Boronic Acids: Access to High Oxidation State Sulfur Pharmacophores
作者:Nathaniel S. Greenwood、Jonathan A. Ellman
DOI:10.1021/acs.orglett.3c00779
日期:2023.4.28
to give sulfilimines. A broad scope was established with a variety of readily accessible aryl and alkyl sulfenamide and boronic acid inputs. Synthetic utility and functional group compatibility were further demonstrated through the direct late-stage introduction of sulfilimines into approved drugs. Derivatization of the sulfilimine products provided access to medicinally relevant sulfoximines and sulfondiimines
Preparation of Sulfilimines by Sulfur-Alkylation of <i>N</i>-Acyl Sulfenamides with Alkyl Halides
作者:Andrew T. Champlin、Jonathan A. Ellman
DOI:10.1021/acs.joc.3c00750
日期:2023.6.2
Sulfur alkylation of N-acyl sulfenamides with alkyl halides provides sulfilimines in 47% to 98% yields. A broad scope was established with a variety of aryl and alkyl sulfenamides, including for different N-acyl groups. Alkyl halides with different steric and electronic properties were effective inputs, including methyl, primary, secondary, benzyl, and propargyl halides. A proof-of-concept asymmetric
Bone marrow cell recovery with synthetic csf inducers
申请人:AMERICAN CYANAMID COMPANY
公开号:EP0394542A1
公开(公告)日:1990-10-31
The invention is a method of accelerating recovery of bone marrow stem cells and/or progenitor cells by the administration of N-substituted phenyl-thioanilines, N-substituted-phenylsulfinylanilines, and N-substituted-phenylsulfonylanilines.
作者:Patel, Shivani、Greenwood, Nathaniel S.、Mercado, Brandon Q.、Ellman, Jonathan A.
DOI:10.1021/acs.orglett.4c02402
日期:——
The Rh(II)-catalyzed enantioselective S-alkylation of sulfenamides with α-amide diazoacetates at 1 mol % catalyst loading to obtain sulfilimines in high yields and enantiomeric ratios of up to 99:1 is reported. The enantioenriched sulfilimine products incorporate versatile amide functionality poised for further elaboration to diverse sulfoximines with multiple stereogenic centers, including by highly