One limitation of the data set we analyzed is that preexposure levels of urinary 1- and 2-naphthol
were missing for roughly half of our study subjects.
Naphthalene ([greater than or equal to] 99%, scintillation grade), [[sup.2][H.sub.8]]naphthalene ([greater than or equal to] 98 atom% D), 1-naphthol ([greater than or equal to] 99%), 2-naphthol
([greater than or equal to] 99%), [[sup.2][H.sub.7]] 1-naphthol (97 atom% D), [[sup.2][H.sub.6]]benzene, and methanol (purge and trap grade) were obtained from Aldrich Chemical Co.
Effect of different catalysts for the synthesis of 2, 3-dihydro-2-phenyl-iH-naphtho-[1,2-e] [1,3] oxazine from the mixture of 2-naphthol
, formalin, aniline and Potassium Dihydrogen Phosphate.
The naphthoxazines studied in this work were obtained by a one-pot reaction between 2-naphthol
, an aldehyde (formaldehyde or furfural), and a nitrogenated compound (furfurylamine or ammonium acetate) under solvent-free conditions and without the use of catalysts, as shown in Figure 2.
A 150 mm-long reverse phase column (TSK gel ODS-80, Tosoh, Tokyo, Japan) was used for 1-OHP analysis, and a 250 mm-long reverse phase column (J'sphere ODS-H80, YMC, Wilmington, N.C., USA) was used for 2-naphthol
As shown in Scheme 1, the hetarylazo dyes 3(a-f) were prepared through the diazotization of 5-phenyl-1,3,4-thiadiazol-2-amine and coupled with different coupling components such as 8-hydroxyquinoline, 2,6-diamino pyridine, N,N dimethyl aniline, 2-naphthol
, resorcinol, and 4,6-dihydroxypyrimidine.
The coatings were compounded with naphthalene, phenanthrene, quinoline, and 2-naphthol
as our model coal tar components.
In the direction of search the scope of this 3-CR, some substituted benzaldehydes reacted with amides (benzamide, urea, acetamide)/thiourea (2a-d) and 2-naphthol
(3) under the optimized reaction conditions, and the results are shown in Table 2.
Associations with individual PAH metabolites and with [SIGMA]mol3-4PAHs were less precise than those estimated for [SIGMA]molPAHs and [SIGMA]NAPHT, but 2-naphthol
was positively associated with BMI z-score, WC, and obesity (overall and in both age groups), and 1-phenanthrene and 2-phenanthrene were positively associated with BMI z-score and WC (overall and in both age groups) (see Supplemental Material, Tables S1 and S2).
Jha, "Microwave-assisted synthesis of novel 2-naphthol
bis-Mannich Bases," Arkivoc, vol.
Among these four rigid-rod compounds, 2-naphthol
(NPT) possesses the most rigid structure.
The one pot synthesis of titled compounds 1-[(5-substituted-2-phenyl-1H-indol-3-yl)(piperidin-1-yl) methyl]naphthalene-2-ol and 1-[(dimethylamino)(5substituted-2-phenyl-1H-indol-3-yl)methyl]naphthalene-2-ol and their -1-ol isomers was achieved by condensation of 1- or 2-naphthol
and secondary amines with 2,5-disubstituted indole-3-carboxaldehydes in dichloromethane stirring at room temperature (Scheme 1 and Table 1).