4852-30-6

Upstream product

• 74411-88-4 1,3,5,7-Tetramethyl-4,8-diphenyl-1,3,5,7-tetraaza-4λ⁵,8λ³-diphosphaspiro<3.4>octan-2,6-dion 
• 90140-40-2 7-Butyl-1,2,7,7a-tetrahydro-1-methyl-2-(methylimino)-4,7a-diphenylpyrrolo<2,3-d><1,3>oxazin-5,6-dion 
• 40585-62-4 2-diethylamino-1,3-dimethyl-1,3-diaza-2λ³-phosphetidin-4-one 
• 622-37-7 Phenyl azide 
• 90140-41-3 1,2,7,7a-Tetrahydro-1-methyl-2-(methylimino)-4,7,7a-triphenylpyrrolo<2,3-d><1,3>oxazin-5,6-dion 

Downstream Products

• 13627-17-3 5-(3,4-dimethoxy-phenyl)-3-methyl-2-methylimino-oxazolidin-4-one 
• 91567-89-4 5-(2,3-dimethoxy-phenyl)-2-imino-3-methyl-oxazolidin-4-one 
• 13956-03-1 5-(2,3-dimethoxy-phenyl)-3-methyl-2-methylimino-oxazolidin-4-one 
• 13627-21-9 5-(3,4-dichloro-phenyl)-3-methyl-2-methylimino-oxazolidin-4-one 
• 13627-19-5 5-(2,6-dichloro-phenyl)-3-methyl-2-methylimino-oxazolidin-4-one 
• 13956-04-2 5-(2,4-dichloro-phenyl)-3-methyl-2-methylimino-oxazolidin-4-one 
• 91216-44-3 5-cyclohexyl-3-methyl-2-methylimino-oxazolidin-4-one 
• 13627-18-4 5-(4-ethoxy-3-methoxy-phenyl)-3-methyl-2-methylimino-oxazolidin-4-one 
• 90140-43-5 1,2,7,7a-Tetrahydro-1,7-dimethyl-2-(methylimino)-4,7a-diphenylpyrrolo<2,3-d><1,3>thiazin-5,6-dion 
• 90140-39-9 1,2,7,7a-Tetrahydro-1,7-dimethyl-2-(methylimino)-4,7a-diphenylpyrrolo<2,3-d><1,3>oxazin-5,6-dion 
• 90140-40-2 7-Butyl-1,2,7,7a-tetrahydro-1-methyl-2-(methylimino)-4,7a-diphenylpyrrolo<2,3-d><1,3>oxazin-5,6-dion 
• 90140-41-3 1,2,7,7a-Tetrahydro-1-methyl-2-(methylimino)-4,7,7a-triphenylpyrrolo<2,3-d><1,3>oxazin-5,6-dion 
• 90140-42-4 1,2,7,7a-Tetrahydro-1-methyl-2-(methylimino)-7-(4-methylphenyl)-4,7a-diphenylpyrrolo<2,3-d><1,3>oxazin-5,6-dion 
• 81409-87-2 N-methyl-N-<(methylamino)-carbonyl>-6-methylergoline-8β-carboxamide 

Relevant academic research and scientific papers

VERBINDUNGEN MIT DEM 1,3-DIMETHYL-1,3-DIAZA-2-PHOSPHETIDIN-4-ON GRUNDGERUEST: SYNTHESE VON 1,3-DIMETHYL-2-PHENYLIMINO-1,3-DIAZA-2λ4-PHOSPHETIDIN-4-ON-DERIVATEN. ROENTGENSTRUKTURANALYSE VON 4,6-DIMETHOXY-5,10-DIPHENYL-1,3,7,9-TETRAMETHYL-1,3,5,7,9,10-HEXAAZA-4λ5,6λ5-DIPHOSPHA...

The reactions of a series of λ3P-diazaphosphetidinones (Y = NEt2: 1, N(CH2)4: 2, NPh2: 3, OMe: 4, N(cyc)2: 5), with phenyl azide are described.The initially formed 2-phenylimino-λ4P-diazaphosphetidinones, , are, except for the bulky dicyclohexyl derivative 12, unstable and dimerize rapidly to the corresponding diazadiphosphetidines, 7 and 9-11.The λ4P,λ5P-diazaphosphetidine 8 is formed from 7 in solution by elimination of MeN=C=NMe.The novel compounds 8-12 were characterized by analysis, n.m.r. and mass spectroscopy; additionally, an X-ray crystal structure analysis of 11 was carried out.The molecule possesses crystallographic twofold symmetry.The P-N bond lengths are 173.9, 179.2 pm (axial) and 168.3, 168.7 pm (equatorial).

Reactions of Cyclic Oxalyl Compounds, XXIII. Reactions of Five-membered 2,3-Dioxo Heterocycles with Carbodiimides - a Synthetic Pathway to Hetero Analogues of Deazapurine Systems

The furandione 1 reacts with diaryl- or arylalkylcarbodiimides to yield 4--2,3-furandiones 5, which isomerize to 2,3-pyrrolediones 2 above 60 deg C. 1, 2, and 5 react with dimethylcarbodiimide under mild conditions (20 deg C, a few minutes) to give the so far unknown pyrrolooxazinediones 7 which reversibly can lose dimethylcarbodiimide to form again 2.Analogously 2,3-thiophenedione 3 and dimethyl- or diisopropylcarbodiimide yield the pyrrolothiazines 8.The basic skeletons of 7 and 8 were determined by X-ray structure analys is of 7a and 8b.On the other hand, the reaction of 1 with diethyl- or diisopropylcarbodiimide leads to furopyrimidines 10.The bicyclic compounds 7, 8, and 10 can be regarded as heteroanalogues of the 7-deazapurine system.The reaction pathways leading to 5, 7, 8, and 10 involve cycloadditions, cycloreversions or fragmentation reactions as well as some surprising new furandione-furandione rearrangements.

Reactions of Heterocycles Containing a P - P Bond

The pyrolysis of the spiro compound 1a with a λ3P - λ5P bond leads to elimination of carbodiimide and formation of 1,4-dimethyl-2,3-diphenyl-1,4,2,3-diazadiphospholidin-5-one 2-oxide (4).The molecular structure of 4 was established b