Methanesulfonic acid (2R,3aR,9aR)-3-(benzenesulfonyl-difluoro-methyl)-2-(4-ethoxy-2-oxo-2H-pyrimidin-1-yl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-yl ester

Base Information

• Chemical Name: Methanesulfonic acid (2R,3aR,9aR)-3-(benzenesulfonyl-difluoro-methyl)-2-(4-ethoxy-2-oxo-2H-pyrimidin-1-yl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-yl ester
• CAS No.: 142887-92-1
• Molecular Formula: C₃₁H₄₈F₂N₂O₁₁S₂Si₂
• Molecular Weight: 783.029

Synonyms:Methanesulfonic acid (2R,3aR,9aR)-3-(benzenesulfonyl-difluoro-methyl)-2-(4-ethoxy-2-oxo-2H-pyrimidin-1-yl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-yl ester

Chemical Property of Methanesulfonic acid (2R,3aR,9aR)-3-(benzenesulfonyl-difluoro-methyl)-2-(4-ethoxy-2-oxo-2H-pyrimidin-1-yl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-yl ester

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Technology Process of Methanesulfonic acid (2R,3aR,9aR)-3-(benzenesulfonyl-difluoro-methyl)-2-(4-ethoxy-2-oxo-2H-pyrimidin-1-yl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-yl ester

There total 3 articles about Methanesulfonic acid (2R,3aR,9aR)-3-(benzenesulfonyl-difluoro-methyl)-2-(4-ethoxy-2-oxo-2H-pyrimidin-1-yl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-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: 69.0%

methanesulfonyl chloride (124-63-0) + 1-[(2R,3aR,9aR)-3-(Benzenesulfonyl-difluoro-methyl)-3-hydroxy-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-2-yl]-4-ethoxy-1H-pyrimidin-2-one (142887-91-0) → Methanesulfonic acid (2R,3aR,9aR)-3-(benzenesulfonyl-difluoro-methyl)-2-(4-ethoxy-2-oxo-2H-pyrimidin-1-yl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-yl ester (142887-92-1)

Guidance literature:

With lithium hexamethyldisilazane; In tetrahydrofuran; at 55 ℃; for 2h;

DOI:10.1016/S0040-4039(00)79824-8

Reference yield:

difluoromethyl phenyl sulfone (1535-65-5) → Methanesulfonic acid (2R,3aR,9aR)-3-(benzenesulfonyl-difluoro-methyl)-2-(4-ethoxy-2-oxo-2H-pyrimidin-1-yl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-yl ester (142887-92-1)

Guidance literature:

Multi-step reaction with 2 steps

1: 85 percent / LiN3)3>2 / tetrahydrofuran; hexamethylphosphoric acid triamide / 0.5 h / -70 °C

2: 69 percent / LiN3)3>2 / tetrahydrofuran / 2 h / 55 °C

With lithium hexamethyldisilazane; In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide;

DOI:10.1016/S0040-4039(00)79824-8

Reference yield:

4-ethoxy-1-<3,5-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-β-D-erythro-2-pentulofuranosyl>-2(1H)-pyrimidinone (113648-22-9) → Methanesulfonic acid (2R,3aR,9aR)-3-(benzenesulfonyl-difluoro-methyl)-2-(4-ethoxy-2-oxo-2H-pyrimidin-1-yl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-yl ester (142887-92-1)

Guidance literature:

Multi-step reaction with 2 steps

1: 85 percent / LiN3)3>2 / tetrahydrofuran; hexamethylphosphoric acid triamide / 0.5 h / -70 °C

2: 69 percent / LiN3)3>2 / tetrahydrofuran / 2 h / 55 °C

With lithium hexamethyldisilazane; In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide;

DOI:10.1016/S0040-4039(00)79824-8

upstream raw materials:

methanesulfonyl chloride

1-[(2R,3aR,9aR)-3-(Benzenesulfonyl-difluoro-methyl)-3-hydroxy-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-2-yl]-4-ethoxy-1H-pyrimidin-2-one

difluoromethyl phenyl sulfone

4-ethoxy-1-<3,5-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-β-D-erythro-2-pentulofuranosyl>-2(1H)-pyrimidinone

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