Dibenzofuran Diphenylene oxide

Diphenylene oxide is present in coal tar in a concentration of around 1% it is recovered from the wash oil fraction by a combination of crystallization and distillation (see Chapter 3.2.3). 

The most important product from diphenylene oxide is 2,2 -dihydroxybiphenyl, which is produced by alkali fusion (ether cleavage) it is used in small amounts as an intermediate in the production of plant protection agents and active ingredients for disinfectants. 

---

Phenanthroline Phenazine Dibenzofuran Diphenylene oxide Dibenzothiophene Diphenylene sulhde 9-Thiafluorene 2-Chlorobiphenyl 4-Chlorobiphenyl 9-Azafluorene Carbazole Dibenzopyrrole Acenaphthene Biphenyl... 

Diphenylene oxide. See Dibenzofuran Diphenylene oxide-3,6-disulfohydrazide... 

DIPT, see Isopropyl ether Dipentyl, see Decane Diphenyl, see Biphenyl 1,1 -Diphenyl, see Biphenyl 4,4 -Diphenylenediamine, see Benzidine p,p -Diphenylenediamine, see Benzidine Diphenylenemethane, see Fluorene o-Diphenylenemethane, see Fluorene Diphenylene oxide, see Dibenzofuran Diphenyl ether, see Phenyl ether s/m-Diphenylhydrazine, see 1,2-Diphenylhydrazine lV,A/ -Diphenylhydrazine, see 1,2-Diphenylhydrazine Diphenylnitrosamine, see IV-Nitrosodiphenylamine Diphenyl-lV-nitrosamine, see IV-Nitrosodiphenylamine A,lV-Diphenylnitrosamine, see IV-Nitrosodiphenylamine A,Al-Diphenyl-lV-nitrosamine, see IV-Nitrosodiphenylamine Diphenyl oxide, see Phenyl ether Diphenyltrichloroethane, see p,p -DDT Diphosphoric acid, tetraethyl ester, see Tetraethyl pyrophosphate... 

This review is concerned with the chemistry of dibenzofuran and its derivatives. Dibenzofuran is numbered as in (1) but the system shown in (2) is widespread in the older literature as is the synonym diphenylene oxide. The last comprehensive review on this topic was by Parham and appeared in 1951. The present work covers the period up to Volume 96 of Chemical Abstracts, although the parts of Volume 97 received at the time of writing have been scanned. Reference to literature earlier than 1951 is made only where deemed appropriate. 

Benzo[6 ]furan (2), usually called simply benzofuran, was first prepared by Perkin, who obtained it from coumarin as in Scheme 2 and (not understanding its constitution) called it coumarone, an unsuitable name that still survives in the term coumarone resin , for the compound is now valued for copolymerization purposes. Later the compound was isolated by distillation of bituminous coal, which is also a source of several methyl and hydroxy derivatives and of dibenzofuran (the name diphenylene oxide is now discarded) <75AHC(18)337>. 

The designation [b,d can be omitted, as no other ring fusion can exist. Dibenzofuran was previously known as diphenylene oxide. 

Dibenzo (a,d) cycloheptadien-5-one Dibenzo (b,f) cycloheptan-1-one Dibenzocycloheptenone 5H-Dibenzo (a,d) cyclohepten-5-one, 10,11-dihydro-. See Dibenzosuberone Dibenzofuran CAS 132-64-9 38178-38-0 Synonyms Diphenylene oxide Empirical Ci2HsO... 

---