90026-01-0

Basic information

• Product Name: meso-dimethylethylene di-p-toluenesulfonate
• Synonyms: meso-dimethylethylene di-p-toluenesulfonate
• CAS NO: 90026-01-0
• Molecular Weight: 398.501
• Mol File: 90026-01-0.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: meso-dimethylethylene di-p-toluenesulfonate(CAS DataBase Reference)
• NIST Chemistry Reference: meso-dimethylethylene di-p-toluenesulfonate(90026-01-0)
• EPA Substance Registry System: meso-dimethylethylene di-p-toluenesulfonate(90026-01-0)

Safety Data

• Hazardous Substances Data: 90026-01-0(Hazardous Substances Data)

Upstream product

• 24347-58-8 (R,R)-2,3-butandiol 
• 98-59-9 p-toluenesulfonyl chloride 
• 1029272-42-1 (2R,3S)-2,3-butanediol 
• 6982-25-8 d,l-2,3-butanediol 
• 513-85-9 2,3-dihydroxybutane 
• 624-64-6 trans-2-Butene 
• 27126-76-7 [hydroxy(tosyloxy)iodo]benzene 
• 590-18-1 (Z)-2-Butene 

Relevant articles and documents

Highly Active and Selective Ethylene Oligomerization Catalyst and Method of Preparing Hexene or Octene Using the Same

This invention relates to a chromium complex compound for selective ethylene oligomerization including a chiral ligand, and to a method of selectively preparing 1-hexene or 1-octene from ethylene using the same.

SYNTHESIS OF OPTICALLY PURE COMPOUNDS BY ENANTIOTOPICALLY DIFFERENTIATING MONOACETALIZATION OF PROCHIRAL DIKETONES. PART II. FRAGMENTATION OF β-KETO-ACETALS

Treatment of β-keto-acetals, derived from non-enolisable β-diketones, with sulfonic acids in boiling benzene results in a smooth retro-Claisen-type fragmentation.The acetal-C-atom is thereby transformed into a carboxylic ester via a dialkoxycarbenium ion, which is dealkylated by the sulfonate counter-ion.Application of this reaction to the diastereomeric monoacetals 3 and 4, derived from cis-9-methyl-decalin-1,8-dione (1), followed by transesterification with CH3OH, yields optically pure 4-(2'-methyl-3'-oxocyclohexyl)butyrate 9 ((+)-9 from 3, (-)-9 from 4) and the monosulfonate of meso-2,3-butanediol (-)-13 (Scheme 2).Unexpected, this cleavage proceeds as well with monoacetal 26, obtained by acetalization of trans-9-methyl-decalin-1,8-dione (27) with 2,2-dimethyl-1,3-propanediol (Scheme 7).Some attempts, aiming at an isomerization of the cis- and trans-decalin derivatives 3 and 24, or 25 and 26, via the postulated carboxonium intermediate, were not successful.