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  2. 4,4'-Biphenol - Wikipedia

    en.wikipedia.org/wiki/4,4'-Biphenol

    The industrial synthesis of 4,4′-biphenol was developed by Allan Hay in the 1960s. [2] [3] As the direct oxidative coupling of phenol gives a mixture of isomers, [4] [5] 4,4′-biphenol is instead prepared from 2,6-di-tert-butylphenol, where para-coupling is the only possibility. [3]

  3. Bisphenol - Wikipedia

    en.wikipedia.org/wiki/Bisphenol

    Bisphenols A (BPA), F (BPF) and S (BPS) have been shown to be endocrine disruptors, potentially relating to adverse health effects. [3] [6] Due to its high production volumes, BPA has been characterised as a "pseudo-persistent" chemical, [7] leading to its spreading and potential accumulation in a variety of environmental matrices, even though it has a fairly short half-life.

  4. Bisphenol S - Wikipedia

    en.wikipedia.org/wiki/Bisphenol_S

    Bisphenol S is prepared by the reaction of two equivalents of phenol with one equivalent of sulfuric acid or oleum. [41] 2 C 6 H 5 OH + H 2 SO 4 → (C 6 H 4 OH) 2 SO 2 + 2 H 2 O 2 C 6 H 5 OH + SO 3 → (C 6 H 4 OH) 2 SO 2 + H 2 O. This reaction can also produce 2,4'-sulfonyldiphenol, a common isomeric complication in electrophilic aromatic ...

  5. Bisphenol A - Wikipedia

    en.wikipedia.org/wiki/Bisphenol_A

    The synthesis of BPA still follows Dianin's general method, with the fundamentals changing little in 130 years. The condensation of acetone (hence the suffix 'A' in the name) [ 33 ] with two equivalents of phenol is catalyzed by a strong acid, such as concentrated hydrochloric acid , sulfuric acid , or a solid acid resin such as the sulfonic ...

  6. Dihydroxybiphenyl - Wikipedia

    en.wikipedia.org/wiki/Dihydroxybiphenyl

    Dihydroxybiphenyl (as known as biphenol) refers to a class of organic compounds consisting of a biphenyl structure with two hydroxyl groups attached. The most common isomers are 2,2'-dihydroxybiphenyl and 4,4'-dihydroxybiphenyl.

  7. Biphenol - Wikipedia

    en.wikipedia.org/wiki/Biphenol

    In organic chemistry, a biphenol refers to compounds with the formula (C 6 H 4 OH) 2. Such compounds formally result from the coupling of two phenols. Three ...

  8. Biphenyl - Wikipedia

    en.wikipedia.org/wiki/Biphenyl

    Biphenyl (also known as diphenyl, phenylbenzene, 1,1′-biphenyl, lemonene [4] or BP) is an organic compound that forms colorless crystals. Particularly in older literature, compounds containing the functional group consisting of biphenyl less one hydrogen (the site at which it is attached) may use the prefixes xenyl or diphenylyl.

  9. Bisphenol F - Wikipedia

    en.wikipedia.org/wiki/Bisphenol_F

    Bisphenol F (BPF; 4,4′-dihydroxydiphenylmethane) is an organic compound with the chemical formula (HOC 6 H 4) 2 CH 2.It is structurally related to bisphenol A (BPA), a popular precursor for forming plastics, as both belong to the category of molecules known as bisphenols, which feature two phenol groups connected via a linking group.