4,4'-Methylenebis(2,6-di-tert-butylphenol) synthesis
- Product Name:4,4'-Methylenebis(2,6-di-tert-butylphenol)
- CAS Number:118-82-1
- Molecular formula:C29H44O2
- Molecular Weight:424.66
88-26-6
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118-82-1
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Yield:118-82-1 96%
Reaction Conditions:
with proton exchanged montmorillonite in dichloromethane at 25; for 0.67 h;Solvent;Time;
Steps:
4. H-mont-mediated transformation of benzylic alcohols 1a-1j
General procedure: To a solution of 4-hydroxy and 4-methoxybenzylic alcohols (0.366 mmol) in anhydrous CH2Cl2 (3 mL) was added H-mont (260 mg). The reaction mixture was stirred at 25 oC until the TLC indicated the consumption of the starting material. The mixture was ltered to remove H-mont. The filtrate was evaporated under reduced pressure. The residue was puried by ash chromatography (petroleum ether/ethylacetate 400:1 to 5:1) to give the product. The results are summarized in Table 1. 4,4'-Methylenebis(2,6-di-tert-butylphenol) (2a).9 Yellow soild. 1H NMR (300 MHz, CDCl3) δ 7.07 (s, 4H), 5.08 (s, 2H), 3.89 (s, 2H), 1.47 (s, 36H); 13C NMR (75 MHz, CDCl3) δ 151.4, 135.2, 131.5, 124.9, 40.9, 33.8, 29.8; ESI MS m/z 424.4.
References:
Chen, Dongyin;Chen, Xuan;Dong, Zezhong;Jiang, Nan;Li, Fei;Yun, Yangfang;Zhou, Yu [Tetrahedron Letters,2020,vol. 61,# 48,art. no. 152584] Location in patent:supporting information
6922-60-7
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118-82-1
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14387-17-8
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108-67-8
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118-82-1
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1709-70-2
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![4,4'-[2,4,6-Trimethyl-1,3-phenylenebis(methylene)]bis[2,6-di(tert-butyl)phenol]](/CAS/GIF/41642-52-8.gif)
41642-52-8
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