Acetic acid 4-[4-(1-acetoxy-2,2,6,6-tetramethyl-1,2,3,6-tetrahydro-pyridin-4-ylethynyl)-phenylethynyl]-2,2,6,6-tetramethyl-3,6-dihydro-2H-pyridin-1-yl ester

Base Information

• Chemical Name: Acetic acid 4-[4-(1-acetoxy-2,2,6,6-tetramethyl-1,2,3,6-tetrahydro-pyridin-4-ylethynyl)-phenylethynyl]-2,2,6,6-tetramethyl-3,6-dihydro-2H-pyridin-1-yl ester
• CAS No.: 198335-03-4
• Molecular Formula: C₃₂H₄₀N₂O₄
• Molecular Weight: 516.681

Synonyms:Acetic acid 4-[4-(1-acetoxy-2,2,6,6-tetramethyl-1,2,3,6-tetrahydro-pyridin-4-ylethynyl)-phenylethynyl]-2,2,6,6-tetramethyl-3,6-dihydro-2H-pyridin-1-yl ester

Chemical Property of Acetic acid 4-[4-(1-acetoxy-2,2,6,6-tetramethyl-1,2,3,6-tetrahydro-pyridin-4-ylethynyl)-phenylethynyl]-2,2,6,6-tetramethyl-3,6-dihydro-2H-pyridin-1-yl ester

Chemical Property:

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Technology Process of Acetic acid 4-[4-(1-acetoxy-2,2,6,6-tetramethyl-1,2,3,6-tetrahydro-pyridin-4-ylethynyl)-phenylethynyl]-2,2,6,6-tetramethyl-3,6-dihydro-2H-pyridin-1-yl ester

There total 8 articles about Acetic acid 4-[4-(1-acetoxy-2,2,6,6-tetramethyl-1,2,3,6-tetrahydro-pyridin-4-ylethynyl)-phenylethynyl]-2,2,6,6-tetramethyl-3,6-dihydro-2H-pyridin-1-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: 42.0%

Acetic acid 4-[4-(1-acetoxy-4-hydroxy-2,2,6,6-tetramethyl-piperidin-4-ylethynyl)-phenylethynyl]-4-hydroxy-2,2,6,6-tetramethyl-piperidin-1-yl ester (198335-00-1) → Acetic acid 4-[4-(1-acetoxy-2,2,6,6-tetramethyl-1,2,3,6-tetrahydro-pyridin-4-ylethynyl)-phenylethynyl]-2,2,6,6-tetramethyl-3,6-dihydro-2H-pyridin-1-yl ester (198335-03-4)

Guidance literature:

With toluene-4-sulfonic acid; In benzene; for 6h; Heating;

DOI:10.1016/S0040-4039(97)01732-2

Reference yield:

1-hydroxy-2,2,6,6-tetramethyl-piperidin-4-one (3637-11-4) → Acetic acid 4-[4-(1-acetoxy-2,2,6,6-tetramethyl-1,2,3,6-tetrahydro-pyridin-4-ylethynyl)-phenylethynyl]-2,2,6,6-tetramethyl-3,6-dihydro-2H-pyridin-1-yl ester (198335-03-4)

Guidance literature:

Multi-step reaction with 3 steps

1: 90 percent / pyridine, DMAP / tetrahydrofuran / 2.5 h / Ambient temperature

2: 92 percent / EtMgBr / tetrahydrofuran / 20 h / Ambient temperature

3: 42 percent / p-TsOH / benzene / 6 h / Heating

With pyridine; dmap; ethylmagnesium bromide; toluene-4-sulfonic acid; In tetrahydrofuran; benzene;

DOI:10.1016/S0040-4039(97)01732-2

Reference yield:

4-oxo-2,2,6,6-tetramethylpiperidin-oxyl (45985-26-0,2896-70-0) → Acetic acid 4-[4-(1-acetoxy-2,2,6,6-tetramethyl-1,2,3,6-tetrahydro-pyridin-4-ylethynyl)-phenylethynyl]-2,2,6,6-tetramethyl-3,6-dihydro-2H-pyridin-1-yl ester (198335-03-4)

Guidance literature:

Multi-step reaction with 4 steps

1: 95 percent / PhNHNHPh / CH₂Cl₂ / 1 h / Ambient temperature

2: 90 percent / pyridine, DMAP / tetrahydrofuran / 2.5 h / Ambient temperature

3: 92 percent / EtMgBr / tetrahydrofuran / 20 h / Ambient temperature

4: 42 percent / p-TsOH / benzene / 6 h / Heating

With pyridine; dmap; ethylmagnesium bromide; toluene-4-sulfonic acid; diphenyl hydrazine; In tetrahydrofuran; dichloromethane; benzene;

DOI:10.1016/S0040-4039(97)01732-2

upstream raw materials:

Acetic acid 4-[4-(1-acetoxy-4-hydroxy-2,2,6,6-tetramethyl-piperidin-4-ylethynyl)-phenylethynyl]-4-hydroxy-2,2,6,6-tetramethyl-piperidin-1-yl ester

1-hydroxy-2,2,6,6-tetramethyl-piperidin-4-one

4-oxo-2,2,6,6-tetramethylpiperidin-oxyl

1.4-dibromobenzene

Downstream raw materials:

p-bis(1-oxyl-2,2,6,6-tetramethyl-Δ³-4-piperidylethynyl)benzene

C₂₈H₃₆N₂O₂

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