SPIROBICROMANE

Base Information

• Chemical Name: SPIROBICROMANE
• CAS No.: 3127-14-8
• Molecular Formula: C21H24 O4
• Molecular Weight: 340.419
• Hs Code.: 2932999099
• Mol file: 3127-14-8.mol

Synonyms:2,2'-Spirobi[chroman]-7,7'-diol,4,4,4',4'-tetramethyl- (7CI,8CI)

Chemical Property of SPIROBICROMANE

Chemical Property:

• Vapor Pressure: 1.12E-11mmHg at 25°C
• Melting Point: 200 °C
• Refractive Index: 1.637
• Boiling Point: 525.9°C at 760 mmHg
• PKA: 9.58±0.60(Predicted)
• Flash Point: 271.9°C
• PSA: 58.92000
• Density: 1.27g/cm³
• LogP: 4.61450
• Solubility.: almost transparency in Methanol

Purity/Quality:

98%,99%, ^*data from raw suppliers

Spirobicromane ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Uses: Spirobicromane is used as a reactant in the preparation of polycarbonate resins and optical films.

Technology Process of SPIROBICROMANE

There total 3 articles about SPIROBICROMANE 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: 85.0%

phorone (504-20-1) + recorcinol (108-46-3) → 4,4,4′,4′-tetramethyl-2,2′-spirobi[chroman]-7,7′-diol (3127-14-8)

Guidance literature:

With hydrogenchloride; In diethyl ether; dichloromethane; for 24h; Heating;

DOI:10.1021/jo961647y

Reference yield: 20.0%

acetone (67-64-1) + recorcinol (108-46-3) → 2,4,4-trimethyl-2-(2,4-dihydroxyphenyl)-7-hydroxychroman (26505-28-2) + 4,4,4′,4′-tetramethyl-2,2′-spirobi[chroman]-7,7′-diol (3127-14-8)

Guidance literature:

With sulfuric acid;

DOI:10.1070/MC2003v013n04ABEH001687

Reference yield: 14.6%

4-methyl-pent-3-en-2-one (141-79-7) + recorcinol (108-46-3) → 4,4,4′,4′-tetramethyl-2,2′-spirobi[chroman]-7,7′-diol (3127-14-8)

Guidance literature:

With iron(III) chloride; In toluene; at 80 ℃; for 12h;

upstream raw materials:

phorone

recorcinol

acetone

4-methyl-pent-3-en-2-one

Refernces

• 1、 -. "Diamine monomer containing spiro pyran structure, preparation method and application thereof, polyimide and preparation and application thereof". Paragraph 0126; 0127; 0128; 0129. . Retrieved 2020/07/15.
• 2、 Filimonov, Sergei I.,Savinsky, Nikolai G.,Evstigneeva, Elena M.. "Reactions of resorcinols with ketones". . p. 194 - 197. Retrieved 2007/10/03.