Ad
related to: how to prepare 2 naphtholebay.com has been visited by 1M+ users in the past month
Search results
Results from the WOW.Com Content Network
2-Naphthol, or β-naphthol, is a fluorescent colorless (or occasionally yellow) crystalline solid with the formula C 10 H 7 OH. It is an isomer of 1-naphthol , differing by the location of the hydroxyl group on the naphthalene ring.
1-Naphthol is a precursor to a variety of insecticides including carbaryl and pharmaceuticals including nadolol [8] [9] as well as for the antidepressant sertraline [10] and the anti-protozoan therapeutic atovaquone. [11] It undergoes azo coupling to give various azo dyes, but these are generally less useful than those derived from 2-naphthol ...
Acid Orange 7, also known as 2-naphthol orange is an azo dye. It is used for dyeing wool. ... This page was last edited on 2 January 2025, at 19:43 (UTC).
2-Naphthol can also be produced by a method analogous to the cumene process. [11] 3-Chlorophenol, which does not arise by chlorination of phenol, can be produced by cumene process beginning with the alkylation of chlorobenzene with propylene. [12] Cresols are produced from isopropyltoluene. [13]
1-Nitroso-2-naphthol can be prepared by treatment of 2-naphthol with nitrous acid: [3] C 10 H 7 OH + HNO 2 → C 10 H 6 (NO)OH + H 2 O. Its conjugate base forms deeply colored complexes with iron(II) and cobalt(II), complexes [M(C 10 H 6 (NO)O) 3] 2-. [4] The deep colors of these complexes results from the delocalized bonding within each five ...
Naphthalenesulfonic acids are used in the synthesis of 1-naphthol and 2-naphthol, precursors for various dyestuffs, pigments, rubber processing chemicals and other chemicals and pharmaceuticals. [25] They are also used as dispersants in synthetic and natural rubbers, in agricultural pesticides , in dyes, and in lead–acid battery plates.
2-Naphthalenethiol is prepared from 2-naphthol by the Newman–Kwart rearrangement starting from a thiocarbamate. [1] It undergoes lithiation at the 1 and 3-position. [2] [3] It can be used as a flavouring agent and has been described as having an “artichoke”, “meaty” and “creamy” taste”. [4] [5]
Molisch test (using α-napthol) indicating a positive result (see purple ring). Molisch's test is a sensitive chemical test, named after Austrian botanist Hans Molisch, for the presence of carbohydrates, based on the dehydration of the carbohydrate by sulfuric acid or hydrochloric acid to produce an aldehyde, which condenses with two molecules of a phenol (usually α-naphthol, though other ...
Ad
related to: how to prepare 2 naphtholebay.com has been visited by 1M+ users in the past month