(3S,4R)-4-<(1S)-1-methyl-2-propenyl>-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-1-(p-methoxybenzyloxycarbonyl)hydroxymethyl-2-azetidinone

Base Information

• Chemical Name: (3S,4R)-4-<(1S)-1-methyl-2-propenyl>-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-1-(p-methoxybenzyloxycarbonyl)hydroxymethyl-2-azetidinone
• CAS No.: 126787-99-3
• Molecular Formula: C₂₅H₃₉NO₆Si
• Molecular Weight: 477.673
• Mol file: 126787-99-3.mol

Synonyms:

Chemical Property of (3S,4R)-4-<(1S)-1-methyl-2-propenyl>-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-1-(p-methoxybenzyloxycarbonyl)hydroxymethyl-2-azetidinone

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (3S,4R)-4-<(1S)-1-methyl-2-propenyl>-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-1-(p-methoxybenzyloxycarbonyl)hydroxymethyl-2-azetidinone

There total 7 articles about (3S,4R)-4-<(1S)-1-methyl-2-propenyl>-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-1-(p-methoxybenzyloxycarbonyl)hydroxymethyl-2-azetidinone 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:

(3S,4R)-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-4-(1-methyl-2-propynyl)-2-azetidinone (615252-63-6) → (3S,4R)-4-<(1S)-1-methyl-2-propenyl>-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-1-(p-methoxybenzyloxycarbonyl)hydroxymethyl-2-azetidinone (123107-97-1,126787-99-3,126788-09-8)

Guidance literature:

Multi-step reaction with 4 steps

1: 1) LDA / 1) THF, hexane, -78 to -40 deg C, 1 h, 2) THF, hexane, -78 deg C to RT then RT, overnight

2: 97 percent / K₂CO₃ / methanol / 5.5 h / Ambient temperature

3: 99 percent / hydrogen, quinoline / 5percent Pd-BaSO₄ / methanol / 0.17 h / Ambient temperature

4: Et₃N / benzene / 10 h / Heating; Dean-Stark trap with mol. sieves 4A

With quinoline; hydrogen; potassium carbonate; triethylamine; lithium diisopropyl amide; palladium on barium sulfate; In methanol; benzene;

DOI:10.1248/cpb.37.2338

Reference yield:

(3R,4R)-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-acetoxyazetidin-2-one (76899-07-5,78963-47-0,78963-48-1,78963-60-7,80951-41-3,81275-02-7,85647-75-2,85954-95-6,92217-74-8,104527-11-9,76855-69-1) → (3S,4R)-4-<(1S)-1-methyl-2-propenyl>-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-1-(p-methoxybenzyloxycarbonyl)hydroxymethyl-2-azetidinone (123107-97-1,126787-99-3,126788-09-8)

Guidance literature:

Multi-step reaction with 3 steps

1: 1) TMSOTf, 2) KF / 1) CH₂Cl₂, 0 deg C, 15 min then 14 h, RT, 2) ether, H₂O, 1 h; var. reag.: BF₃*Et₂O

2: 99 percent / hydrogen, quinoline / 5percent Pd-BaSO₄ / methanol / 0.17 h / Ambient temperature

3: Et₃N / benzene / 10 h / Heating; Dean-Stark trap with mol. sieves 4A

With quinoline; potassium fluoride; trimethylsilyl trifluoromethanesulfonate; hydrogen; triethylamine; palladium on barium sulfate; In methanol; benzene;

DOI:10.1248/cpb.37.2338

Reference yield:

(3R,4R)-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-4-<(1S)-1-methyl-2-propynyl>-2-azetidinone (113396-81-9) → (3S,4R)-4-<(1S)-1-methyl-2-propenyl>-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-1-(p-methoxybenzyloxycarbonyl)hydroxymethyl-2-azetidinone (123107-97-1,126787-99-3,126788-09-8)

Guidance literature:

Multi-step reaction with 2 steps

1: 99 percent / hydrogen, quinoline / 5percent Pd-BaSO₄ / methanol / 0.17 h / Ambient temperature

2: Et₃N / benzene / 10 h / Heating; Dean-Stark trap with mol. sieves 4A

With quinoline; hydrogen; triethylamine; palladium on barium sulfate; In methanol; benzene;

DOI:10.1248/cpb.37.2338

upstream raw materials:

4(R)-<1-buten-3(S)-yl>-3(S)-<1(R)-<(tert-butyldimethylsilyl)oxy>ethyl>-2-oxoazetidine

(3R,4R)-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-acetoxyazetidin-2-one

(3R,4R)-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-4-<(1S)-1-methyl-2-propynyl>-2-azetidinone

(3S,4R)-1-(tert-Butyl-dimethyl-silanyl)-3-[(R)-1-(tert-butyl-dimethyl-silanyloxy)-ethyl]-4-(1-methyl-prop-2-ynyl)-azetidin-2-one

Downstream raw materials:

(3S,4R)-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-1-(p-methoxybenzyloxycarbonyl)hydroxymethyl-4-<(1R)-1-methyl-2,3-epoxypropyl>-2-azetidinone

p-methoxybenzyl (1S,5R,6S)-6-<(1R)-1-hydroxyethyl>-1-methyl-2-(5-methyl-1,3,4-thiadiazol-2-yl)thiomethylcarbapen-2-em-3-carboxylate

(3S,4R)-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-1-(p-methoxybenzyloxycarbonyl)triphenylphosphoranediylmethyl-4-<(1R)-2-hydroxy-1-methyl-3-(5-methyl-1,3,4-thiadiazol-2-ylthio)propyl>-2-azetidinone

(3S,4R)-3-<(1R)-1-(tert-butyldimethylsilyloxy)ethyl>-1-(p-methoxybenzyloxycarbonyl)triphenylphosphoranediylmethyl-4-<(1R)-3-(5-methyl-1,3,4-thidiazol-2-ylthio)-2-oxopropyl>-2-azetidinone