2-Bromo-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester

Base Information

• Chemical Name: 2-Bromo-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester
• CAS No.: 239446-17-4
• Molecular Formula: C₂₄H₂₇BrO₇
• Molecular Weight: 507.378
• Mol file: 239446-17-4.mol

Synonyms:2-Bromo-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester

Chemical Property of 2-Bromo-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 2-Bromo-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester

There total 1 articles about 2-Bromo-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester 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: 85.0%

methyl 4,6-O-benzylidene-3-O-benzyl-α-D-glucopyranoside (76419-48-2) + α-bromopropionyl bromide (563-76-8) → 2-Bromo-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester (239446-17-4)

Guidance literature:

With pyridine; In dichloromethane; -5 deg C -> r.t., 2 h;

DOI:10.1016/S0040-4039(99)00935-1

Reference yield: 40.0%

2-Bromo-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester (239446-17-4) → 2-Nitro-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester (239446-22-1)

Guidance literature:

With 3,5-dihydroxyphenol; sodium nitrite; In N,N-dimethyl-formamide; at 20 ℃; for 2h;

DOI:10.1016/S0040-4039(99)00935-1

Reference yield:

2-Bromo-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester (239446-17-4) → (R)-2-Methyl-2-nitro-3-(4-nitro-phenyl)-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester

Guidance literature:

Multi-step reaction with 2 steps

1: 40 percent / NaNO₂; phloroglucinol / dimethylformamide / 2 h / 20 °C

2: NaH / dimethylformamide / 1 h / 20 °C / Irradiation

With 3,5-dihydroxyphenol; sodium hydride; sodium nitrite; In N,N-dimethyl-formamide; 1: Substitution / 2: Substitution;

DOI:10.1016/S0040-4039(99)00935-1

upstream raw materials:

methyl 4,6-O-benzylidene-3-O-benzyl-α-D-glucopyranoside

α-bromopropionyl bromide

Downstream raw materials:

2-Nitro-propionic acid (2R,4aR,6S,7R,8S,8aR)-8-benzyloxy-6-methoxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl ester