13887-07-5

Upstream product

• 629-20-9 1,3,5,7-cyclooctatetraene 
• 644-97-3 Dichlorophenylphosphine 
• 7289-58-9 9-phenyl-9-phosphabicyclo<6.1.0>nona-2,4,6-triene 
• 85363-58-2 anti-9-chloro-9-phosphabicyclo<4.2.1>nona-2,4,7-triene 
• 591-51-5 phenyllithium 
• 34480-05-2 dipotassium cyclooctatetraenide 
• 43017-15-8 9-phenyl-9-phosphabicyclo[4.2.1]nonatriene oxide 
• 1552-12-1 1,5-cis,cis-cyclooctadiene 
• 477773-51-6 cyclooctatetraene 

Downstream Products

• 43017-15-8 9-phenyl-9-phosphabicyclo[4.2.1]nonatriene oxide 
• 18116-78-4 (CO)5CrP(C₈H₈)(C₆H₅) 
• 18116-81-9 Hg(Co(CO)3C₈H₈P(C₆H₅))2 
• 30092-40-1 9,9,9-triphenyl-9λ⁵-phospha-pentacyclo[4.3.0.0^2,5.0^3,8.0^4,7]nonane 
• 33845-98-6 9-methyl-9,9-diphenyl-9λ⁵-phospha-pentacyclo[4.3.0.0^2,5.0^3,8.0^4,7]nonane 
• 33845-97-5 9,9-dimethyl-9-phenyl-9λ⁵-phospha-pentacyclo[4.3.0.0^2,5.0^3,8.0^4,7]nonane 
• 40468-93-7 9-phenyl-9-phosphabicyclo[4.2.1]nonane oxide 
• 40468-88-0 9,9-diphenyl-(1rP,2cH,5cH,6cP)-9-phospha-tricyclo[4.2.1.0^2,5]nonanium; bromide 
• 40468-90-4 9,9,9-triphenyl-(1rP,2cH,5cH,6cP)-9λ⁵-phospha-tricyclo[4.2.1.0^2,5]nonane 
• 40468-92-6 9-phenyl-9-phosphatricyclo<4.2.1.0^2,5>nonane 9-oxide 
• 43017-30-7 9ξ-methyl-9ξ-phenyl-(1rP,2cH,5cH,6cP)-9-phospha-tricyclo[4.2.1.0^2,5]nonanium; iodide 
• 43017-31-8 1-phenyl-octahydro-1-phospha-2,3-cyclo-dicyclopropa[a,cd]pentalene 1-oxide 
• 28051-32-3 9-phenyl-9-phospha-pentacyclo[4.3.0.0^2,5.0^3,8.0^4,7]nonane 9-oxide 
• 25881-31-6 9-phenyl-9-phospha-pentacyclo[4.3.0.0^2,5.0^3,8.0^4,7]nonane 

Relevant academic research and scientific papers

METHODS FOR PHOSPHINE OXIDE REDUCTION IN CATALYTIC WITTIG REACTIONS

A method for increasing the rate of phosphine oxide reduction, preferably during a Wittig reaction comprising use of an acid additive is provided. A room temperature catalytic Wittig reaction (CWR) the rate of reduction of the phosphine oxide is increased due to the addition of the acid additive is described. Furthermore, the extension of the CWR to semi-stabilized and non-stabilized ylides has been accomplished by utilization of a masked base and/or ylide-tuning.

ZUR CHEMIE DES CYCLOOCTATETRAENYLDILITHIUMS. 9-(N,N-DIALKYLAMINO)-9-PHOSPHABICYCLONONA-2,4,7-TRIENE, 9-HALOGEN-9-PHOSPHABICYCLONONA-2,4,7-TRIENE UND DEREN NUCLEOPHILE SUBSTITUTION, 9-H-9-PHOSPHABICYCLONONA-2,4,7-TRIEN

N,N-(Dialkylamino)-dichlorophosphanes react with cyclooctatetraenyldilithium to give the syn/anti-9-(N,N-dialkylamino)-9-phosphabicyclonona-2,4,7-trienes 5 (syn/anti ratio 100/0 to 54/46); syn-9-(N,N-Diethylamino)-9-phosphabicyclonona-2,4,7-

VARIATIONS IN PROPERTIES OF BRIDGED PHOSPHORUS HETEROCYCLES

Highly strained cyclic phosphine oxides can give anomalous results (inversion, C-P cleavage) on deoxygenation with HSiCl3 or C6H5SiH3.Use of the pyridine complex of HSiCl3 generally overcomes these difficulties, and a number of strained phosphines were prepared.Definite trends in 31P NMR shifts among saturated and unsaturated structures have been observed.Phosphines in the 7-phosphanorbornene system are particularly prone to form P(V) cycloadducts, which then decompose by a reverse McCormack-type of reaction.The reactivity is so high that even dienes form adducts with these phosphines.