anisaldehyde

(redirected from 4-methoxybenzaldehyde)

anisaldehyde

[¦a·nəs′al·də‚hīd]
(organic chemistry)
C6H4(OCH3)CHO A compound with melting point 2.5°C, boiling point 249.5°C; insoluble in water, soluble in alcohol and ether; used in perfumery and flavoring, and as an intermediate in production of antihistamines.
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Table 3: Comparison of the yields with best methods found in the literatures Entry Aldehyde Isolated Literature best Yield (a) (%) yield (%)/Pyrrole: (%)/Pyrrole: aldehyde ratio aldehyde ratio 1 2-nitrobenzaldehyde 94/2:1 73/20:1 [11] 2 4-fluorobenzaldehyde 95/2:1 77/20:1 [11] 3 Benzaldehyde 97/2:1 86/03:1[13] 4 4-methoxybenzaldehyde 94/2:1 90/10:1 [14] 5 2,6-Dichlorobenzaldehyde 95/2:1 85/03:1[13] 6 4-methylbenzaldehyde 95/2:1 83/40:1 * [12] 7 4-chlorobenzaldehyde 97/2:1 77/20:1[11] 8 4-bromobenzaldehyde 92/2:1 74/40:1 * [12] (a) products were characterized by IR, [sup.
4-Amino-1,2,4- triazole 3 was converted to its Schiff bases 4a-c by refluxing with 4-chlorobenzaldehyde, 2-hydroxy1- naphthaldehyde and 4-methoxybenzaldehyde in acetic acid.