PEG-25 PABA

Base Information

• Chemical Name: PEG-25 PABA
• CAS No.: 116242-27-4
• Molecular Formula: C₅H₁₂OS
• Molecular Weight: 120.216
• Mol file: 116242-27-4.mol

Synonyms:Poly(oxy-1,2-ethanediyl),a,a'-[[(4-carboxyphenyl)imino]di-2,1-ethanediyl]bis[w-hydroxy-, ester with a-hydro-w-hydroxypoly(oxy-1,2-ethanediyl)(1:1) (9CI); Uvinul P 25

Chemical Property of PEG-25 PABA

Chemical Property:

• PSA: 108.69000
• LogP: -0.34010

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of PEG-25 PABA

There total 8 articles about PEG-25 PABA 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: 63.0%

2-mercapto-3-methylbutanoic acid (39801-53-1,114423-53-9,132958-60-2,138619-81-5) → rac-3-methyl-2-mercapto-1-butanol (116229-37-9)

Guidance literature:

With sodium tetrahydroborate; titanium tetrachloride; In 1,2-dimethoxyethane; for 48h; Ambient temperature;

DOI:10.1135/cccc19930404

Reference yield: 7.0%

2-mercapto-3-methyl-2-butenoic acid → rac-3-methyl-2-mercapto-1-butanol (116229-37-9) + 2-mercapto-3-methyl-2-buten-1-ol

Guidance literature:

With lithium aluminium tetrahydride; In diethyl ether; for 48h;

DOI:10.1135/cccc19930404

Reference yield:

Dithiocarbonic acid O-ethyl ester S-(1-formyl-2-methyl-propyl) ester → rac-3-methyl-2-mercapto-1-butanol (116229-37-9)

Guidance literature:

With lithium aluminium tetrahydride; In diethyl ether; for 24h; Yield given;

DOI:10.1135/cccc19930404

upstream raw materials:

2-mercapto-3-methylbutanoic acid

ethyl 2-bromoisovalerate

2-bromoisovaleric acid

5-(1-methylethylidene)-2-thioxo-1,3-thiazolidin-4-one

Refernces

• 1、 Wu, Shao-Yong,Hirashima, Akinori,Takeya, Ryuko,Eto, Morifusa. "Synthesis and Insecticidal Activity of Oxazaphospholidines, Oxathiaphospholanes, and Thiazaphospholidines". . p. 2911 - 2918. Retrieved 2007/10/02.