Benzoin → HCID 131710645, compound

HRID 436013Notes

Reaction equation

HRID 436013 reaction equation
[C:1]1([C:7]([CH:9]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[OH:10])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH3:17][O:18][CH:19]1[CH2:24][CH2:23][CH:22]=[CH:21][O:20]1>C1C=CC=CC=1>[CH3:17][O:18][C:19]1([O:8][CH:7]([C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)[C:9](=[O:10])[C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[CH2:24][CH2:23][CH2:22][CH2:21][O:20]1

Participants

4

Reactant 2

HCID 8400BenzoinHCID 915383,4-dihydro-2-methoxy-2H-pyran

Product 1

HCID 131710645HCID 131710645, compoundYield 87.4%

Reagents, catalysts & solvents 1

HCID 241BenzeneSolvent

Procedure

85 parts of benzoin are reacted with 68.4 parts (50% molar excess) of 2-methoxy-2,3-dihydro-4H-pyran in 120 parts by volume of benzene, analogously to Example 1. The resulting benzoin 2-methoxy-tetrahydropyranyl ether, obtained in a yield of 87.4% of theory, boils at 195° to 200° C/0.3 mm Hg and has the following structure: ##STR7## NMR spectrum (in CDCl3): δ = 1.0 -2.4 (multiplet, 6 protons)

Sources & evidence

ORD record
ord-d843bf137d3348c1b117b077a1b547e7
Source dataset
uspto-grants-1977_02
Patent number
US04007209

Reaction notes

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