321200-89-9

Upstream product

• 140875-58-7 (2,2,6-trimethyl-4H-benzo[1,3]dioxin-8-yl)-methanol 
• 91-04-3 2,6-bis(hydroxymethyl)-4-methylphenol 
• 321200-88-8 8-(2-oxapent-4-enyl)-2,2,6-trimethyl-1,3-benzodioxin 

Relevant academic research and scientific papers

Structural diversity through intramolecular cycloaddition and modulation of chemical reactivity in excited state. Synthesis and photoreactions of 3-oxa-tricyclo[5.2.2.01,5]undecenones: Novel stereoselective route to oxa-triquinanes and oxa-sterpuranes

Synthesis of 11-methyl-3-oxa-tricyclo[5.2.2.01,5]undecenones by intramolecular Diels-Alder reaction of highly labile spiroepoxycyclohexa-2,4-dienones and its photochemical reactions upon triplet (3T) and singlet (1S) excitation leading to a stereo-selective route to oxa-triquinane and oxa-sterpurane, respectively, is described. (C) 2000 Elsevier Science Ltd.

Synthesis and photoreactions of 3-oxa-tricyclo[5.2.2.01,5]undecenones: A novel, stereoselective route to oxa-triquinanes and oxa-sterpuranes

The synthesis of 11-methyl-3-oxa-tricyclo[5.2.2.01,5]undecenones and their photochemical reactions upon triplet (3T) and singlet (1S) excitation is described. Oxidation of hydroxymethylphenol gave a ketoepoxide by intramolecular cycloaddition. Manipulation of the oxirane ring furnished the chromophoric systems. Triplet excitation of these gave tetracyclic compounds containing an oxatriquinane framework. Singlet excitation furnished the tricyclic compound having an oxasterpurane ring system in a stereoselective fashion.