134209-90-8

Basic information

• Product Name: 1,7,8-triaza-3,3,6,6-tetramethyl-5-oxa-2-oxo-1-phenylspiro<3,4>oct-7-ene
• Synonyms: 1,7,8-triaza-3,3,6,6-tetramethyl-5-oxa-2-oxo-1-phenylspiro<3,4>oct-7-ene
• CAS NO: 134209-90-8
• Molecular Weight: 259.308
• Mol File: 134209-90-8.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 1,7,8-triaza-3,3,6,6-tetramethyl-5-oxa-2-oxo-1-phenylspiro<3,4>oct-7-ene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,7,8-triaza-3,3,6,6-tetramethyl-5-oxa-2-oxo-1-phenylspiro<3,4>oct-7-ene(134209-90-8)
• EPA Substance Registry System: 1,7,8-triaza-3,3,6,6-tetramethyl-5-oxa-2-oxo-1-phenylspiro<3,4>oct-7-ene(134209-90-8)

Safety Data

• Hazardous Substances Data: 134209-90-8(Hazardous Substances Data)

Upstream product

• 77637-40-2 5,5-dimethyl-2-phenylimino-Δ³-1,3,4-oxadiazoline 
• 79-30-1 isobutyryl chloride 
• 78002-37-6 acetone 4-phenylsemicarbazone 
• 21449-52-5 2-phenylimino-5,5-dimethyl-Δ³-1,3,4-oxadiazoline 
• 134209-88-4 [2-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-[5,5-dimethyl-5H-[1,3,4]oxadiazol-(2Z)-ylidene]-amine 

Downstream Products

• 896746-17-1 (RS,SR)-1'-(3'',3''-dimethyl-1''-phenylazetidin-2''-one)-5'-chloro-3,3-dimethyl-1-phenylspiro[azetidine-4,3'-indoline]-2,2'-dione 
• 896746-17-1 (RS,RS)-1'-(3'',3''-dimethyl-1''-phenylazetidin-2''-one)-5'-chloro-3,3-dimethyl-1-phenylspiro[azetidine-4,3'-indoline]-2,2'-dione 
• 896746-05-7 (RS,SR)-1'-(3'',3''-dimethyl-1''-phenylazetidin-2''-one)-3,3,5'-trimethyl-1-phenylspiro[azetidine-4,3'-indoline]-2,2'-dione 
• 896746-05-7 (RS,RS)-1'-(3'',3''-dimethyl-1''-phenylazetidin-2''-one)-3,3,5'-trimethyl-1-phenylspiro[azetidine-4,3'-indoline]-2,2'-dione 
• 935756-22-2 8-chloro-1-(p-chlorophenyl)-3,3-dimethyl-4-phenylimino-5-(3,3-dimethyl-1-phenylazetidin-2-on-4-yl)-δ-carbolin-2-one 
• 935756-03-9 5-chloro-1-(3,3-dimethyl-2-oxo-1-phenylazetidin-4-yl)-2-((Z)-3,3-dimethyl-2-oxo-1-phenylazetidin-4-ylidene)-3-(p-chlorophenylimino)-2,3-dihydroindole 
• 1303541-42-5 3,3-dimethyl-1,8-diphenyl-3,3a-dihydroindeno[2,1-b]pyrrol-2-one 
• 1303541-24-3 3,3-dimethyl-1,8-diphenyl-3,8-dihydroindeno[2,1-b]pyrrol-2-one 
• 1303541-54-9 3,6a-diphenyl-6,6-dimethyl-4-phenyl-6,6a-dihydropyrrolo[3,2-c]pyrazol-5-one 
• 1303541-48-1 6-chloro-8-(4-chlorophenyl)-3,3-dimethyl-1-phenyl-3,3a-dihydroindeno[2,1-b]pyrrol-2-one 
• 1303541-55-0 3,6a-bis(4-chlorophenyl)-6,6-dimethyl-4-phenyl-6,6a-dihydropyrrolo[3,2-c]pyrazol-5-one 
• 1303541-47-0 6-methoxy-8-(4-methoxyphenyl)-3,3-dimethyl-1-phenyl-3,3a-dihydroindeno[2,1-b]pyrrol-2-one 
• 1303541-33-4 6-methoxy-8-(4-methoxyphenyl)-3,3-dimethyl-1-phenyl-3,8-dihydroindeno[2,1-b]pyrrol-2-one 
• 1303541-49-2 3,3-dimethyl-1-phenyl-6-(trifluoromethyl)-8-(4-(trifluoromethyl)phenyl)-3,3a-dihydroindeno[2,1-b]pyrrol-2-one 

Relevant articles and documents

Reaction of β-lactam carbenes with 2-pyridyl isonitriles: A one-pot synthesis of 2-carbonyl-3-(pyridylamino)imidazo[1,2-a]pyridines useful as fluorescent probes for mercury ion

The one-pot reaction of β-lactam carbenes with 2-pyridyl isonitriles followed by an acidic hydrolysis was reported, which produced 2-carbonyl-3-(pyridylamino)imidazo[1,2-a]pyridines in moderate to good yields. Among the resulting novel imidazo[1,2-a]pyrid

Spiro-fused β-lactam oxadiazolines by formal cycloaddition of 2-imino-Δ3-1,3,4-oxadiazolines to ketenes

Sixteen spiro-fused β-lactam oxadiazolines were prepared by treatment of 2-imino-Δ3-1,3,4-oxadiazolines with carboxylic acid chlorides in the presence of triethylamine.Two others were prepared by methylation of β-lactam oxadiazoline anion equivalents with methyl iodide.Isomer ratios, spectra, stereochemistry, and relative thermodynamic stabilities of a pair of diastereomeric β-lactam oxadiazolines are reported.Three cases of failure of the approach are noted, to define some of the limitations.The oxadiazolines are known to undergo thermolysis, in solution, to afford N2, a ketone, and a β-lactam-4-ylidene.Phenyl substitution at C5 of the oxadiazoline ring serves to decrease the thermolysis temperature by about 50 deg C but it also leads to the onset of a side reaction that lowers the yield of ylidene.This observation indicates a limitation of the oxadiazoline approach to the generation of β-lactam-4-ylidene.