115077-70-8

Basic information

• Product Name: 1,6,7,14-Tetraoxa-dispiro[4.2.5.2]pentadeca-9,12-diene-2,11-dione
• CAS NO: 115077-70-8
• Molecular Weight: 238.197
• Mol File: 115077-70-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1,6,7,14-Tetraoxa-dispiro[4.2.5.2]pentadeca-9,12-diene-2,11-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 1,6,7,14-Tetraoxa-dispiro[4.2.5.2]pentadeca-9,12-diene-2,11-dione(115077-70-8)
• EPA Substance Registry System: 1,6,7,14-Tetraoxa-dispiro[4.2.5.2]pentadeca-9,12-diene-2,11-dione(115077-70-8)

Safety Data

• Hazardous Substances Data: 115077-70-8(Hazardous Substances Data)

Upstream product

• 10008-73-8 5-methylenedihydrofuran-2-one 
• 106-51-4 p-benzoquinone 

Relevant articles and documents

Preparative UV-VIS Laser Photochemistry: Photocycloadditions of Methylenelactones with Benzophenone and p-Benzoquinone. Oxygen Trapping of Paterno-Buechi Triplet 1,4-Diradicals as Model Reactions for Quinghaosu-Type 1,2,4-Trioxanes

The UV-VIS laser irradiation of 4-penten-4-olide (1) with benzophenone (BP) or with p-benzoquinone (BQ) under an argon atmosphere afforded the acetal-type oxetanes 2-BP and 2-BQ, respectively.Only for BP was the oxetane regioisomer 3-BP obtained, actually as major product, while 3-BQ appears to be photolabile under VIS-laser photolysis conditions and thus does not accumulate in sufficient amounts for detection.Under an oxygen atmosphere, besides these oxetane products also the 1,2,4-trioxanes 5-BP and 5-BQ, the oxygen trapping products of the intermediary preoxetanetriplet diradicals 12, were isolated and fully characterized.These results demonstrate that spirolactone-type 1,2,4-trioxanes as quinghaosu analogues are accessible via trapping of Paterno-Buechi triplet 1,4-diradicals by molecular oxygen.In the case of diketene as enol-lactone partner, the Paterno-Buechi reaction with BQ gave a complex product mixture even under an argon atmosphere, leading to the oxetane 6 as major product, and the spirocyclobutanone 7 and spirobioxetane 8 as minor products.Under an oxygen atmosphere also the spiroacetal 9 was obtained, but no trioxanes (oxygen trapping) could be detected in this VIS-laser photolysis.