2,2,2-trichloroethyl 4,6-O-benzylidene-β-D-galactopyranoside

Base Information

• Chemical Name: 2,2,2-trichloroethyl 4,6-O-benzylidene-β-D-galactopyranoside
• CAS No.: 155239-77-3
• Molecular Formula: C₁₅H₁₇Cl₃O₆
• Molecular Weight: 399.655
• Mol file: 155239-77-3.mol

Synonyms:2,2,2-trichloroethyl 4,6-O-benzylidene-β-D-galactopyranoside

Chemical Property of 2,2,2-trichloroethyl 4,6-O-benzylidene-β-D-galactopyranoside

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 2,2,2-trichloroethyl 4,6-O-benzylidene-β-D-galactopyranoside

There total 1 articles about 2,2,2-trichloroethyl 4,6-O-benzylidene-β-D-galactopyranoside 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: 97.0%

benzaldehyde dimethyl acetal (1125-88-8) + 2,2,2-trichloroethyl (β)-D-galactopyranoside → 2,2,2-trichloroethyl 4,6-O-benzylidene-β-D-galactopyranoside (155239-77-3)

Guidance literature:

With toluene-4-sulfonic acid; In acetonitrile; at 20 ℃; for 1h;

DOI:10.1016/0008-6215(94)00362-J

Reference yield: 77.0%

3,4,6-tri-O-acetyl-2-azido-2-deoxy-β-D-galactopyranosyl trichloroacetimidate (83025-11-0) + 2,2,2-trichloroethyl 4,6-O-benzylidene-β-D-galactopyranoside (155239-77-3) → 2,2,2-trichloroethyl O-(3,4,6-tri-O-acetyl-2-azido-2-deoxy-α-D-galactopyranosyl)-(1<*>3)-4,6-O-benzylidene-α-D-galactopyranoside

Guidance literature:

With trimethylsilyl trifluoromethanesulfonate; 4 A molecular sieve; In dichloromethane; at -20 ℃;

DOI:10.1016/0040-4039(94)88332-7

Reference yield:

2,2,2-trichloroethyl 4,6-O-benzylidene-β-D-galactopyranoside (155239-77-3) → allyl N-(9-fluorenylmethoxycarbonyl)-O<3)-O-(4,6-di-O-acetyl-β-D-galactopyranosyl)-(1<*>3)-2-azido-4,6-O-benzylidene-2-deoxy-α-D-galactopyranosyl>-(1<*>3)>-L-serine

Guidance literature:

Multi-step reaction with 5 steps

1: 77 percent / 4 Angstroem molecular sieves, TMSOTf / CH₂Cl₂ / -20 °C

2: 86 percent / DMAP / pyridine

4: 58 percent / 4 Angstroem molecular sieves / TMSOTf / CH₂Cl₂ / 12 h / -20 °C

5: 98 percent

With dmap; trimethylsilyl trifluoromethanesulfonate; 4 A molecular sieve; trimethylsilyl trifluoromethanesulfonate; In pyridine; dichloromethane;

DOI:10.1016/0040-4039(94)88332-7

upstream raw materials:

benzaldehyde dimethyl acetal