85434-22-6

Basic information

• Product Name: 2,3,9,10-tetrahydro-6-methoxy-2,2,8,8-tetramethyl-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one
• Synonyms: 2,3,9,10-tetrahydro-6-methoxy-2,2,8,8-tetramethyl-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one
• CAS NO: 85434-22-6
• Molecular Weight: 290.359
• Mol File: 85434-22-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2,3,9,10-tetrahydro-6-methoxy-2,2,8,8-tetramethyl-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3,9,10-tetrahydro-6-methoxy-2,2,8,8-tetramethyl-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one(85434-22-6)
• EPA Substance Registry System: 2,3,9,10-tetrahydro-6-methoxy-2,2,8,8-tetramethyl-4H,8H-benzo<1,2-b:3,4-b'>dipyran-4-one(85434-22-6)

Safety Data

• Hazardous Substances Data: 85434-22-6(Hazardous Substances Data)

Upstream product

• 624-96-4 1,3-dichloro-3-methylbutane 
• 541-47-9 3-Methylbutenoic acid 
• 6100-60-3 4-methoxybenzene-1,3-diol 

Downstream Products

• 1481-93-2 4-hydroxychroman 
• 85434-29-3 9,10-dihydro-6-methoxy-2,2,8,8-tetramethyl-2H,8H-benzo<1,2-b:3,4-b'>dipyran 

Relevant articles and documents

NOVEL "ONE-POT" PREPARATION OF TETRAHYDROBENZODIPYRAN-4-ONES. APPLICATION TO THE SYNTHESIS OF PRECOCENE ANALOGUES WITH CONDENSED DIHYDROPYRAN RINGS

A novel one-pot preparation of tetrahydrobenzodipyran-4-ones 5 and 6 involving the sequential condensation of resorcinols 7 with 3,3-dimethylacrylic acid (8) and 1,3-dichloro-3-methylbutane (10) in the presence of methanesulphonic acid (which acts as solvent and catalyst) and further conversion of tetrahydrobenzodipyran-4-ones to the corresponding dihydrobenzodipyrans 3 and 4, which are precocene analogues, is described.