140934-67-4

Basic information

• Product Name: (2aS,4aS,7aR)-7-Benzenesulfonyl-1-[1-benzenesulfonyl-meth-(E)-ylidene]-3,4a,6-trimethyl-2,2a,4a,7a-tetrahydro-1H-5-oxa-7b-aza-cyclobuta[e]indene
• CAS NO: 140934-67-4
• Molecular Weight: 483.609
• Mol File: 140934-67-4.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: (2aS,4aS,7aR)-7-Benzenesulfonyl-1-[1-benzenesulfonyl-meth-(E)-ylidene]-3,4a,6-trimethyl-2,2a,4a,7a-tetrahydro-1H-5-oxa-7b-aza-cyclobuta[e]indene(CAS DataBase Reference)
• NIST Chemistry Reference: (2aS,4aS,7aR)-7-Benzenesulfonyl-1-[1-benzenesulfonyl-meth-(E)-ylidene]-3,4a,6-trimethyl-2,2a,4a,7a-tetrahydro-1H-5-oxa-7b-aza-cyclobuta[e]indene(140934-67-4)
• EPA Substance Registry System: (2aS,4aS,7aR)-7-Benzenesulfonyl-1-[1-benzenesulfonyl-meth-(E)-ylidene]-3,4a,6-trimethyl-2,2a,4a,7a-tetrahydro-1H-5-oxa-7b-aza-cyclobuta[e]indene(140934-67-4)

Safety Data

• Hazardous Substances Data: 140934-67-4(Hazardous Substances Data)

Upstream product

• 3718-65-8 3,5-Dimethylpyridine N-oxide 
• 2525-40-8 prop-2-ynylsulfonylbenzene 
• 2525-42-0 phenylsulfonylpropa-1,2-diene 
• 140934-66-3 (3aR,7aS)-3-Benzenesulfonyl-2,6,7a-trimethyl-3a,7a-dihydro-furo[3,2-b]pyridine 

Relevant articles and documents

Reaction of Aromatic N-Oxides with Dipolarophiles. Part 18. Formation Mechanism and X-Ray Structure of the Cycloadduct from Sequential Pericyclic Reaction of Pyridine N-Oxides with Phenylsulfonylallene.

Sequential pericyclic reactions of pyridine N-oxides (1) with phenylsulfonylpropadiene (2) and 1-phenylsulfonylpropyne (3) were investigated. 3,5-Dimethylpyridine N-oxide (1a) was allowed to react with 2 in CHCl3 at room temperature to give a mixture of the -sigmatropic rearrangement product (4a) of the 1:1 cycloadduct and the 1:2 azetidine-type cycloadduct (5a).The structure of 5a was established by single crystal X-ray analysis.The reaction rate of 1a with 2 was about 50000 times that of 1a with N-phenylmaleimide.The reactionof 1a with 3 did not give 5a but 4a as the sole product.The reactivity, regio- and peri-selectivity and formation mechanism of 4 and 5 are discussed in terms of the frontier molecular orbital consideration based on kinetic and molecular orbital calculation data.