91070-23-4

Basic information

• Product Name: 1,2-di-tert-butyl-1,2-di(p-tolyltelluro)diphosphane
• CAS NO: 91070-23-4
• Molecular Weight: 613.644
• Mol File: 91070-23-4.mol

Chemical Properties

• CAS DataBase Reference: 1,2-di-tert-butyl-1,2-di(p-tolyltelluro)diphosphane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-di-tert-butyl-1,2-di(p-tolyltelluro)diphosphane(91070-23-4)
• EPA Substance Registry System: 1,2-di-tert-butyl-1,2-di(p-tolyltelluro)diphosphane(91070-23-4)

Safety Data

• Hazardous Substances Data: 91070-23-4(Hazardous Substances Data)

Upstream product

• 61695-12-3 tri-tert-butylcyclotriphosphane 
• 513-81-5 2,3-dimethyl-buta-1,3-diene 
• 25979-07-1 tert-butyldichlorophosphine 
• 87869-43-0 2,3,4-Tri-tert-butyl-[1,2,3,4]telluratriphosphetane 
• 78190-50-8 p-Tolyltelluro-di-tert-butylphosphan 
• 78190-51-9 p-Tolyltelluro-diisopropylphosphan 
• 79898-85-4 1,2-di-tert-butyl-1,2-dichlorodiphosphane 
• 32294-57-8 bis(4-methylphenyl)ditelluride 

Relevant articles and documents

Ditelluride-promoted diphosphene transfer from a cyclotriphosphane to 2,3-dimethylbutadiene: characterization of di(aryltelluro)diphosphanes

The cleavage of tri-tert-butylcyclotriphosphane 1 with di(4-methylphenyl)ditelluride 2 leads to 1,2-di-tert-butyl-1.2-di(4-methylphenyltelluro)diphosphane 3 and tetra-tert-butylcyclotetraphosphane.When 1 is heated with 2 in the presence of 2,3-dimethylbutadiene, the diphosphene trapping product 1,2-di-tert-butyl-4,5-dimethyl-1,2-diphosphacyclohex-4-ene 5 can be detected.The salt elimination reaction of tert-butyldichlorophosphane with 4-methylphenyltellurotelluromagnesium bromide leads mainly to 3 and ditelluride 2.Tellurophosphane 6 and 1,2-di-tert-butyl-1,2-di(aryltelluro)diphosphanes 3. 7 (7 : aryl = 2,4,6-triisopropylphenyl) are available in fair yields from di-tert-butylchlorophosphane or 1,2-di-tert-butyl-1,2-dichlorodiphosphane with metal tellurolates.At 90 deg C with 2,3-dimethylbutadiene, 7 acts as a source of 1,2-di-tert-butyldiphosphene trapped as cycloadduct 5. - Keywords: cyclophosphanes / phosphorus-carbon heterocycles / cleavage of phosphorus-phosphorus bonds / di(aryltelluro) diphosphanes / diphosphene transfer.

NEW STERICALLY CONGESTED ORGANOSELENIUM AND TELLURIUM COMPOUNDS

The report on recent preparative, n.m.r. spectroscopic and structural results concerning steric effects in organoselenium and -tellurium chemistry covers: 1. extremely bulky ditellurides and diselenides, including rotational barriers and unusual conformat

NOVEL REACTIONS WITH TELLURIUM AND ORGANOTELLURIUM REAGENTS

Novel reactions with elemental tellurium, organic ditellurides and diselenides and or reagents with Te-Li, Se-Li and Te-Si bonds are reviewed.These reagents have been used to prepare new molecules with Te-P, Se-P, Te-C, Te=C, Te-I and Se-I bonds.

INSERTION AND 2+2 DISMUTATION REACTIONS INCLUDING P-P, Te-Te AND Se-Se BONDS

Reactions of diphosphanes and cyclophosphanes with selenium, tellurium and organic ditellurides have been studied