A new class of 3,4-disubstituted pyrroles has been prepared by the reaction of 1-aroyl-2-arylsul-fonylethenes and 1,2-diarylsulfonylethenes with tosyl methyl isocyanide.
A Novel Route for the Synthesis of Unsaturated Oxo Sulfones and Bissulfones
作者:D. Bhaskar Reddy、N. Chandrasekhar Babu、V. Padmavathi、R. P. Sumathi
DOI:10.1055/s-1999-3416
日期:1999.3
The reaction between vinyl chloride and aroyl/arylsulfonyl chloride under Friedel-Craft's reaction conditions was the basis for the synthesis of unsaturated oxo sulfones and bissulfones.
Silver(I)-Promoted Radical Sulfonylation of Allyl/Propargyl Alcohols: Efficient Synthesis of γ-Keto Sulfones
作者:Guichun Fang、Jianquan Liu、Weidong Shang、Qun Liu、Xihe Bi
DOI:10.1002/asia.201601223
日期:2016.12.6
sulfonylation of allyl/propargyl alcohols with sodium sulfinates has been developed. The reaction tolerates a wide range of functional groups to deliver γ‐keto sulfones in high yields (up to 93 %). Propargyl alcohols furnished trimerization product 1,3,5‐triaroylbenzenes in the presence of sodium methanesulfinate under the standard conditions. A mechanism involving a sulfonyl radical was suggested.
已经开发出了一种有效的由亚磺酸钠与丙烯/炔丙基醇进行的Ag 2 CO 3促进的磺酰化反应。该反应可耐受多种官能团,以高产率(高达93%)提供γ-酮砜。在标准条件下,在甲磺酸钠存在下,炔丙醇提供了三聚产物1,3,5-三芳酰苯。提出了涉及磺酰基的机理。
Palladium (0) catalysed rearrangements of allylic sulfoximines to allyl sulfinimidic acid esters and optically active N-Cbz protected γ-amino-enones
作者:Stephen G. Pyne、Dorothy M. David、Zemin Dong
DOI:10.1016/s0040-4039(98)01847-4
日期:1998.11
N-Tosyl allylic sulfoximines undergo rearrangement to allyl sulfinimidic acid esters in the presence of bidentate chiral ligands while N-Cbz allylic sulfoximines give opticallyactive N-Cbz protected γ-amino-enones.
[2,3]-Wittig Rearrangement of Enantiomerically Enriched 3-Substituted 1-Propenyloxy-1-phenyl-2-propen-1-yl Carbanions: Effect of Heteroatoms and Conjugating Groups on Planarization of an α-Oxy-Benzylcarbanion through a Double Bond
Don't get trapped: The effect of conjugating electron‐withdrawing groups and α‐anion‐stabilizing heteroatom substituents on configurational stability of chiral carbanions through a double bond was examined on the basis of extent of chirality transfer in intramolecular trapping in [2,3]‐Wittig rearrangement of chiral 3‐substituted 1‐propenyloxy‐1‐phenyl‐2‐propen‐1‐yl carbanions (see scheme).