Molbank, Volume 2005, Issue 1

A 40% aqueous solution of sulfuric acid (0.5 mL) was added to a stirred solution of 3,3-dimethyl- 4-hydroxy-5-(2,2,3-trimethyl-3-cyclopentenyl)-pentan-2-one (1) (630 mg, 2.65 mmol) in methanol (5 mL) and the mixture refluxed for 1.5 h.[...]

p-Toluenesulfonic acid (35 mg, 0.20 mmol) was added to a stirred mixture of campholenic aldehyde (1) (725 mg, 3.81 mmol) and p-toluenesulfonamide (1.22 g, 6.96 mmol) in toluene (20 mL).[...]

p-Toluenesulfonic acid (48 mg, 0.25 mmol) was added to a stirred mixture of ethyl 2-methyl-acetoacetate (1) (346 mg, 2.40 mmol) and a-methylbenzylamine (2) (358 mg, 2.95 mmol) in toluene (13 mL) [1].[...]

Sodium (241 mg, 10.48 mmol) was added to absolute ethanol (40 mL) and the mixture refluxed until sodium reacted completely.

The mixture of aniline 1 (97 mg, 1 mmol), 3-chloromethyl-1,5-dimethyl pyrazol 2 (301.6 mg, 2 mmol) and sodium carbonate (444 mg, 4 mmol) in acetonitrile (10 mL) was refluxed for three hours [1, 2].[...]

The mixture of N,N-dimethyl-para-phenylenediamine 2 (136 mg, 10 mmol) and 1-hydroxy-methyl-3,5-dimethylpyrazol 1 (252 mg, 20 mmol) in CH₃CN (20 mL), was stirred at room temperature for five days[1,2].[...]

4,6-bis(thiomorpholin-4-ylmethyl)-1,2,3-benzenetriol (2) was prepared from pyrogalol (1) and thiomorpholine and formaldehyde (37%) in methanol as solvent.[...]

4-chloro-2-(thiomorpholin-4-ylmethyl)phenol (2) was prepared from 4-chlorophenol (1) and thiomorpholine and formaldehyde (37%) in methanol as solvent.[...]

4-tert-butyl-2-(thiomorpholin-4-ylmethyl)phenol (2) and 4-tert-butyl-2,6-bis(thiomorpholin-4-ylmethyl)phenol (3) were prepared from 4-tert-butylphenol (1) and thiomorpholine and formaldehyde (37%) in methanol as solvent.[...]

There is considerable interest in the synthesis of new materials with large second-order optical non-linearity because of their potential applications in optical data storage, telecommunications and optical signals processing ^1-4.[...]

To a refluxed solution of ferrocenecarboxaldehyde 1 (2.14g, 0.01 mol) and malononitrile 2 (0.66g, 0.01 mmol) in ethanol (25 ml), Piperidine (1 ml) was added.[...]

As part of ongoing research programme on bicyclic heterocycles [1,2,3,4] we have elaborated a new approach to 1H-pyrazolo[4,3-e][1,2,4]triazine derivative 3 and its synthetic precursor 2 by reaction of oxime 5-acetyl-3-(methylsulfanyl)-1,2,4-triazine...