55275-72-4

Upstream product

• 67-56-1 methanol 
• 606492-29-9 2-phenyl-3,4-dihydro-2H-pyran-4-ol 
• 100-52-7 benzaldehyde 
• 40989-96-6 2-phenyl-2,3-dihydropyran-4-one 
• 10034-09-0 1-methoxy-1,3-butadiene 

Relevant academic research and scientific papers

A Convenient Preparation of 6-Substituted-2-methoxy-5,6-dihydro-2H-pyrans via Cyclocondensation of Aldehydes with Danishefsky's Diene

Cyclocondensation of various aldehydes with Danishefsky's diene, followed by reduction of 2-substituted-2,3-dihydropyran-4-ones, and then by the Ferrier transformation of the resulting 2-substituted-2,3-dihydro-4H-pyran-4-ols, affords 6-substituted-2-meth

General Approach to the Synthesis of Naturally Occurring δ-Lactones

The adducts from thermal and/or high-pressure Diels-Alder reactions between 1-methoxybuta-1,3-diene and carbonyl compounds (glyoxylates, aldehydes) are utilized as the starting materials for the syntheses of naturally occurring δ-lactones.Total syntheses of massoilactone, 6-phenyl-2-pyrone, and 2-methoxy-6-undecyl-5,6-dihydro-2H-pyran are described.A general approach to these syntheses is presented.