3,17-dimethyl-9-diphenylmethylenenonadeca-3,5,7,10,12,14,16-heptaene-1,18-diyne

Base Information

• Chemical Name: 3,17-dimethyl-9-diphenylmethylenenonadeca-3,5,7,10,12,14,16-heptaene-1,18-diyne
• CAS No.: 83320-81-4
• Molecular Formula: C₃₄H₃₀
• Molecular Weight: 438.612
• Mol file: 83320-81-4.mol

Synonyms:3,17-dimethyl-9-diphenylmethylenenonadeca-3,5,7,10,12,14,16-heptaene-1,18-diyne

Chemical Property of 3,17-dimethyl-9-diphenylmethylenenonadeca-3,5,7,10,12,14,16-heptaene-1,18-diyne

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 3,17-dimethyl-9-diphenylmethylenenonadeca-3,5,7,10,12,14,16-heptaene-1,18-diyne

There total 2 articles about 3,17-dimethyl-9-diphenylmethylenenonadeca-3,5,7,10,12,14,16-heptaene-1,18-diyne 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:

diphenylacetic acid chloride (1871-76-7) + 3,17-dimethyl-3,5,7,10,12,14,16-nonadecaheptaene-1,18-diyn-9-one (74231-42-8) → 3,17-dimethyl-9-diphenylmethylenenonadeca-3,5,7,10,12,14,16-heptaene-1,18-diyne (83320-81-4)

Guidance literature:

With triethylamine; Yield given. Multistep reaction;

DOI:10.1016/S0040-4039(00)87423-7

Reference yield:

2,2-diphenylacetic acid (117-34-0) → 3,17-dimethyl-9-diphenylmethylenenonadeca-3,5,7,10,12,14,16-heptaene-1,18-diyne (83320-81-4)

Guidance literature:

Multi-step reaction with 2 steps

1: SOCl₂ / 3 h / 90 - 100 °C

2: 1.) Et₃N / 1.) C₆H₆, room temperature, 20 min, 2.) reflux, 1 h

With thionyl chloride; triethylamine;

Reference yield: 30.0%

3,17-dimethyl-9-diphenylmethylenenonadeca-3,5,7,10,12,14,16-heptaene-1,18-diyne (83320-81-4) → 6,11-dimethyl-19-diphenylmethylene-7,8,9,10-tetradehydrocyclononadecene (83320-74-5)

Guidance literature:

With copper diacetate; In pyridine; diethyl ether; at 50 ℃;

DOI:10.1016/S0040-4039(00)87423-7

upstream raw materials:

diphenylacetic acid chloride

3,17-dimethyl-3,5,7,10,12,14,16-nonadecaheptaene-1,18-diyn-9-one

2,2-diphenylacetic acid

Downstream raw materials:

6,11-dimethyl-19-diphenylmethylene-7,8,9,10-tetradehydrocyclononadecene