P-nitrobiphenyl

Amino 2 deoxy d glucose, conversion of hydrochloride to 2 acetamido-2 deoxy d glucose, 46, 2 l-(Ammomcthyl) cycloheptanol, 46, 31 2 Amino 2 methyl 1 propanol in isolation of levopimanc acid 45, 64 c-Amino p nitrobiphenyl, by nitration of o aminobiphenyl, 46, 86 from o,p dimtrobiphenyl, 46, 88 Amino 2 propanone, semicarbazone... 

Synonyms AI3-00635 BA 2794 CCRIS 443 EINECS 202-204-7 4-Nitro-l,l -biphenyl 4-Nitro-diphenyl p-Nitrobiphenyl NSC 1324 4-Phenylnitrobenzene p-Phenylnitrobenzene PNB. 

Nitro-l,l -biphenyl, see 4-Nitrobiphenyl p-Nitrobiphenyl, see 4-Nitrobiphenyl Nitrocarbol, see Nitromethane 4-Nitrochlorobenzene, see p Chloronitrobenzene p-Nitrochlorobenzene, see p Chloronitrobenzene Nitrochloroform, see Chloropicrin Nitrochloropropane, see 1-Chloro-l-nitropropane... 

Toxicology. p-Nitrobiphenyl (PNB) is a urinary bladder carcinogen in dogs. 

B. o-Amino-p -nitrobiphenyl. Concentrated sulfuric acid (400 ml.) is placed in a 11. round-bottomed flask fitted with a mechanical stirrer and a thermometer. Stirring is begun, and 45.0 g. (0.27 mole) of powdered o-aminobiphenyl is added all at once through a powder funnel. When the amine has dissolved, the flask is placed in an ice-salt bath and its contents cooled to a temperature between 0° and —5°. A mixture of 30 ml. of concentrated sulfuric acid and 11.0 ml. of fuming nitric acid (density... 

Electrophilic aromatic substitution in biphenyl is best understood by considering one ring as the functional group and the other as a substituent. An aryl substituent is ortho, para-directing. Nitration of biphenyl gives a mixture of o-nitrobiphenyl and p-nitrobiphenyl. 

Sodium azide, reaction with f-butyl chloroacetate, 45, 47 reaction with diazonium salt from o-amino-p -nitrobiphenyl, 46, 86 Sodium chlorodifluoroacetate, 47, SO reaction with triphenylphosphine and benzaldehyde, 47, SO Sodium ethoxide, 45, 25 reaction with diethyl succinate, 46,25 Sodium formate as reducing agent in preparation of palladium catalyst, 46,90... 

Figure 5.9. Anomalous Stokes shift illustrated by displacements of 0-0 transitions in absorption and fluorescence of p-amino-p -nitrobiphenyl in benzene/dioxane as a function of the dioxane content (by permission from Lippert, 1966).

SYNONYMS p-nitrobiphenyl, 4-nitrobiphenyl, p-nitrodiphenyl, p-phenyl-nitrobenzene, 4-phenyl-nitrobenzene, pnb. 

Diallyl (1) ( 30%) was distilled off and W-allylaniline (4) (45—60%), iV, -diallylaniline (5) (8—10%) and allylalcohol ( 5%) were isolated after deboronation of the residue (Table 1). Negligible amounts of aniline as well as the products of allylation of N-allylaniline in aromatic ring and in a-position of the allylic group were also detected. Trimethallylborane reacts in the same way to produce dimethallyl (33%), A -methallylaniline (57%), A, 7V-dimethallylaniline (8.5%) and negligible co-products. Similar products were isolated fi om the allylboration of / -chloronitrobenzene, and o- and p-nitrobiphenyl (Table 1). 

Synonyms/Trade Names p-Nitrobiphenyl, p-Nitrodiphenyl, 4-Nitrodiphenyl, p-PhenyInitrobenzene, 4-Phenylnitrobenzene, PNB... 

A soln. of 1.1 moles p-nitrobiphenyl, 1 mole benzaldehyde, and hexarhodium hexadecacarbonyl in anhydrous pyridine heated 3 hrs. at 165-170 and an initial pressure of 150 atm. CO in rodcing stainless-steel autoclave N-benzylidene-p-phenylaniline. Y 84% based on the benzaldehyde. F. e. s. A. F. M. Iqbal, J. Org. Chem. 37, 2791 (1972). 

NITROBlPHENYL c Hjyo. p-Nitrobiphenyl, p-Nttrodtphenyl, 4-Nhrodiphcnyl. Phenyl-nMro-benzene, p-Phcnyl-nHro nzene, PNB Strong reducers N A NA NA... 

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