131561-32-5

Basic information

• Product Name: 2,2-Dichlor-1,3-dimethyl-2-phenyl-2λ⁵-phosphetidin-4-on
• Synonyms: 2,2-Dichlor-1,3-dimethyl-2-phenyl-2λ⁵-phosphetidin-4-on
• CAS NO: 131561-32-5
• Molecular Weight: 265.079
• Mol File: 131561-32-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2,2-Dichlor-1,3-dimethyl-2-phenyl-2λ⁵-phosphetidin-4-on(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2-Dichlor-1,3-dimethyl-2-phenyl-2λ⁵-phosphetidin-4-on(131561-32-5)
• EPA Substance Registry System: 2,2-Dichlor-1,3-dimethyl-2-phenyl-2λ⁵-phosphetidin-4-on(131561-32-5)

Safety Data

• Hazardous Substances Data: 131561-32-5(Hazardous Substances Data)

Upstream product

• 96-31-1 N,N'-Dimethylurea 
• 4895-65-2 phenyltetrachlorophosphorane 

Downstream Products

• 824-72-6 P,P-dichlorophenylphosphine oxide 
• 126695-50-9 1,3 Dimethyl-2-phenyl-1,3,2-diazaphosphetidin-4-on-2-oxid 
• 74411-89-5 4-Phenyl-1,3,5,7-tetramethyl-1,3,5,7-tetraaza-2λ⁵-phosphaspiro<3.3>heptan-2,6-dion 

Relevant articles and documents

4-Substituted 1,3,5,7-Tetramethyl-1,3,5,7-tetraza-4λ5-phosphaspiroheptane-2,6-diones; Crystal Structure of 1,3,4,6,7,9,10-Heptamethyl-5-oxa-1,3,7,9,10-pentaaza-4λ5,6λ5-diphosphadispirodecane-2,8-dione

The reaction of the tetrachlorophosphoranes RPCl4 (R=Me, Ph) with N,N'-dimethylurea (dmh) (1), or of the diazaphosphetidinone O=C(NMe)2PR (R=CCl3) (3) and chlorine with N,N'-bis(trimethylsilyl)-N,N'-dimethylurea (2) furnished the spiro compounds RP2 (7-9).The dichlorophosphoranes O=C(NMe)2PRCl2 (4-6) are intermediates in these reactions; 4 and 6 were isolated but 5 could not be obtained pure.In the reaction of 4 with 2 a mixture of products was formed, from which the novel tricyclic diphosphorane 1,3,4,6,7,9,10-heptamethyl-5-oxa-1,3,7,9,10-pentaaza-4l5,6λ5-diphosphadispirodecane-2,8-dione (10) was isolated in low yield.Its identity and structure were established by 1H, 13C and 31P NMR spectroscopy and by a single crystal X-ray structure determination, which confirmed the presence of the novel oxazadiphosphetidine ring. 10 crystallizes in C2/c with a=1321.1(3), b=687.6(1), c=1674.5(3) pm, β=103.30(2) deg and Z=4; R=0.039 for 1437 unique observed reflections.A crystallographic twofold axis passes through the Me-N...O moiety of the central ring.