4-{1-[1-(5,5-Dimethyl-8-p-tolyl-5,6-dihydro-naphthalen-2-yl)-meth-(E)-ylidene]-3,3-dimethoxy-propyl}-benzoic acid ethyl ester

Base Information

• Chemical Name: 4-{1-[1-(5,5-Dimethyl-8-p-tolyl-5,6-dihydro-naphthalen-2-yl)-meth-(E)-ylidene]-3,3-dimethoxy-propyl}-benzoic acid ethyl ester
• CAS No.: 204449-10-5
• Molecular Formula: C₃₄H₃₈O₄
• Molecular Weight: 510.673
• Mol file: 204449-10-5.mol

Synonyms:

Chemical Property of 4-{1-[1-(5,5-Dimethyl-8-p-tolyl-5,6-dihydro-naphthalen-2-yl)-meth-(E)-ylidene]-3,3-dimethoxy-propyl}-benzoic acid ethyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 4-{1-[1-(5,5-Dimethyl-8-p-tolyl-5,6-dihydro-naphthalen-2-yl)-meth-(E)-ylidene]-3,3-dimethoxy-propyl}-benzoic acid ethyl ester

There total 4 articles about 4-{1-[1-(5,5-Dimethyl-8-p-tolyl-5,6-dihydro-naphthalen-2-yl)-meth-(E)-ylidene]-3,3-dimethoxy-propyl}-benzoic acid ethyl 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:

5,5-dimethyl-8-p-tolyl-5,6-dihydro-naphthalene-2-carbaldehyde (204449-09-2) + ethyl 4-(diethoxyphosphoryl-3,3-dimethoxypropyl)benzoate → 4-{1-[1-(5,5-Dimethyl-8-p-tolyl-5,6-dihydro-naphthalen-2-yl)-meth-(Z)-ylidene]-3,3-dimethoxy-propyl}-benzoic acid ethyl ester + 4-{1-[1-(5,5-Dimethyl-8-p-tolyl-5,6-dihydro-naphthalen-2-yl)-meth-(E)-ylidene]-3,3-dimethoxy-propyl}-benzoic acid ethyl ester (204449-10-5)

Guidance literature:

With n-butyllithium; In tetrahydrofuran; at -10 ℃; Title compound not separated from byproducts;

DOI:10.1016/S0960-894X(99)00077-3

Reference yield:

para-methylphenylmagnesium bromide (4294-57-9) → 4-{1-[1-(5,5-Dimethyl-8-p-tolyl-5,6-dihydro-naphthalen-2-yl)-meth-(E)-ylidene]-3,3-dimethoxy-propyl}-benzoic acid ethyl ester (204449-10-5)

Guidance literature:

Multi-step reaction with 4 steps

1: tetrahydrofuran / 0 °C

2: p-TSA / methanol

3: 1.) t-BuLi / 2.) THF, -78 deg C

4: n-BuLi / tetrahydrofuran / -10 °C

With n-butyllithium; tert.-butyl lithium; toluene-4-sulfonic acid; In tetrahydrofuran; methanol;

DOI:10.1016/S0960-894X(99)00077-3

Reference yield:

7-bromo-4,4-dimethyl-1-(p-tolyl)-1,2,3,4-tetrahydronaphthalen-1-ol (188889-04-5) → 4-{1-[1-(5,5-Dimethyl-8-p-tolyl-5,6-dihydro-naphthalen-2-yl)-meth-(E)-ylidene]-3,3-dimethoxy-propyl}-benzoic acid ethyl ester (204449-10-5)

Guidance literature:

Multi-step reaction with 3 steps

1: p-TSA / methanol

2: 1.) t-BuLi / 2.) THF, -78 deg C

3: n-BuLi / tetrahydrofuran / -10 °C

With n-butyllithium; tert.-butyl lithium; toluene-4-sulfonic acid; In tetrahydrofuran; methanol;

DOI:10.1016/S0960-894X(99)00077-3

upstream raw materials:

5,5-dimethyl-8-p-tolyl-5,6-dihydro-naphthalene-2-carbaldehyde

para-methylphenylmagnesium bromide

6-bromo-1,1-dimethyl-4-(p-tolyl)-1,2-dihydronaphthalene

7-bromo-4,4-dimethyl-1-(p-tolyl)-1,2,3,4-tetrahydronaphthalen-1-ol

Downstream raw materials:

4-{1-[1-[5,5-Dimethyl-8-(5-methyl-thiophen-2-yl)-5,6-dihydro-naphthalen-2-yl]-meth-(E)-ylidene]-3,3-dimethoxy-propyl}-benzoic acid ethyl ester