119274-45-2

Upstream product

• 31491-21-1 2-phenyl-1,1-bis(trimethylsilyloxy)ethene 
• 25145-04-4 (Z)-4-trimethylsiloxypent-3-en-2-one 
• 114143-90-7 2-<(tert-butyldimethylsilyl)oxy>-4,6-dimethylpyrylium trifluoromethanesulfonate 
• 119972-62-2 tert-Butyl-(4,6-dimethyl-4-phenyl-4H-pyran-2-yloxy)-dimethyl-silane 
• 675-09-2 4,6-Dimethyl-2-pyron 
• 119274-35-0 3-Bromo-4,6-dimethyl-4-phenyl-3,4-dihydro-pyran-2-one 

Relevant academic research and scientific papers

Synthesis of pyran-2-ones by reaction of 1,1-bis(trimethylsilyloxy)ketene acetals with 3-silyloxyalk-2-en-1-ones

Functionalized pyran-2-ones were prepared in two steps by the reaction of 1,1-bis(trimethylsilyloxy)ketene acetals with 3-silyloxyalk-2-en-1-ones. Georg Thieme Verlag Stuttgart.

Silver Ion Promoted Rearrangement of 4-Aryl- and 4-Alkenyl-3-bromo-4,6-dimethyl-3,4-dihydro-2-pyrones

Debromination of 4-aryl- or 4-alkenyl-3-bromo-4,6-dimethyl-3,4-dihydro-2-pyrone 1 with AgSbF6 in CH2Cl2 or ClCH2CH2Cl induced migration of the aryl or alkenyl group, giving the corresponding 3-substituted 2-pyrones 2.A 2-hydroxypyrylium salt 3 was detecte

SYNTHESIS OF 3-ARYL- OR 3-ALKENYL-4,6-DIMETHYL-2-PYRONES BY SILVER ION PROMOTED REARRANGEMENT OF 4-ARYL- OR 4-ALKENYL-3-BROMO-4,6-DIMETHYL-3,4-DIHYDRO-2-PYRONES

Debromination of 4-aryl- or 4-alkenyl-3-bromo-4,6-dimethyl-3,4-dihydro-2-pyrone (1) with AgSbF6 in dichloromethane or 1,2-dichloroethane induced rearrangement of the aryl or alkenyl group to the 3-position to afford the corresponding 3-substituted 2-pyron