(3aR,5R,7aS)-5-(benzyloxymethyl)-7a-(5-bromo-2-fluorophenyl)-1,3,3a,4,5,7-hexahydropyrano[3,4-c]isoxazole

Base Information

Chemical Name:(3aR,5R,7aS)-5-(benzyloxymethyl)-7a-(5-bromo-2-fluorophenyl)-1,3,3a,4,5,7-hexahydropyrano[3,4-c]isoxazole
CAS No.:1220329-26-9
Molecular Formula:C₂₀H₂₁BrFNO₃
Molecular Weight:422.294
Hs Code.:

Synonyms:(3aR,5R,7aS)-5-(benzyloxymethyl)-7a-(5-bromo-2-fluorophenyl)-1,3,3a,4,5,7-hexahydropyrano[3,4-c]isoxazole

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Chemical Property of (3aR,5R,7aS)-5-(benzyloxymethyl)-7a-(5-bromo-2-fluorophenyl)-1,3,3a,4,5,7-hexahydropyrano[3,4-c]isoxazole

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Technology Process of (3aR,5R,7aS)-5-(benzyloxymethyl)-7a-(5-bromo-2-fluorophenyl)-1,3,3a,4,5,7-hexahydropyrano[3,4-c]isoxazole

There total 5 articles about (3aR,5R,7aS)-5-(benzyloxymethyl)-7a-(5-bromo-2-fluorophenyl)-1,3,3a,4,5,7-hexahydropyrano[3,4-c]isoxazole which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 67.0%

: 116272-41-4
4-bromo-1-fluoro-2-iodobenzene

: 1220328-97-1
(3aR,5R)-5-[(benzyloxy)methyl]-3,3a,4,5-tetrahydro-7H-pyrano[3,4-c][1,2]oxazole

: 1220329-26-9
(3aR,5R,7aS)-5-(benzyloxymethyl)-7a-(5-bromo-2-fluorophenyl)-1,3,3a,4,5,7-hexahydropyrano[3,4-c]isoxazole

Guidance literature:: (3aR,5R)-5-[(benzyloxy)methyl]-3,3a,4,5-tetrahydro-7H-pyrano[3,4-c][1,2]oxazole; With boron trifluoride diethyl etherate; In toluene; at -78 ℃; for 0.5h;

4-bromo-1-fluoro-2-iodobenzene; With n-butyllithium; In hexane; toluene; at -78 ℃; for 1.5h;

Reference yield:

: 1435-53-6
2,4-dibromo-1-fluorobenzene

: 1220328-97-1
(3aR,5R)-5-[(benzyloxy)methyl]-3,3a,4,5-tetrahydro-7H-pyrano[3,4-c][1,2]oxazole

: 1220329-26-9
(3aR,5R,7aS)-5-(benzyloxymethyl)-7a-(5-bromo-2-fluorophenyl)-1,3,3a,4,5,7-hexahydropyrano[3,4-c]isoxazole

Guidance literature:: 2,4-dibromo-1-fluorobenzene; With n-butyllithium; In tetrahydrofuran; toluene; at -78 ℃;

(3aR,5R)-5-[(benzyloxy)methyl]-3,3a,4,5-tetrahydro-7H-pyrano[3,4-c][1,2]oxazole; With boron trifluoride diethyl etherate; In tetrahydrofuran; toluene; at -78 ℃;

Reference yield:

: 58931-16-1,88981-35-5,110339-28-1
(R)-1-benzyloxypent-4-en-2-ol

: 1220329-26-9
(3aR,5R,7aS)-5-(benzyloxymethyl)-7a-(5-bromo-2-fluorophenyl)-1,3,3a,4,5,7-hexahydropyrano[3,4-c]isoxazole

Guidance literature:: Multi-step reaction with 4 steps

1.1: sodium hydride / tetrahydrofuran; mineral oil / 0.5 h / 30 °C

1.2: 19 h / 20 - 70 °C

2.1: formic acid; water / 2.5 h / 20 °C

2.2: 18 h / 20 °C

3.1: sodium hypochlorite / water; dichloromethane / 1.5 h / 0 - 15 °C

4.1: boron trifluoride diethyl etherate / toluene / 0.5 h / -78 °C

4.2: 1.5 h / -78 °C

With sodium hypochlorite; formic acid; boron trifluoride diethyl etherate; water; sodium hydride; In tetrahydrofuran; dichloromethane; water; toluene; mineral oil;