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1-PHENYLCYCLOPENTANECARBOXALDEHYDE

C. 1 -Phenylcyclopentanecarboxaldehyde. The crude tetrahy-drooxazine (25.0 g., 0.092 mole) from Part B is heated at reflux with 300 ml. of water containing 37.8 g. (0.300 mole) of oxalic acid dihydrate for 3 hours. The solution is cooled, and the aldehyde is extracted with four 150-ml. portions of petroleum ether (b.p. 40-60°). The organic extracts are combined and washed with 10 ml. of saturated sodium bicarbonate solution and dried with anhydrous powdered magnesium sulfate. The petroleum ether is removed by distillation with a rotary evaporator, and the product is distilled through a Vigreux column to give 7.8-8.7 g. (50-55%) of 1-phenylcyclopentane-carboxaldehyde, b.p. 70-73° (0.1 mm.) n26-BD 1.5350, infrared spectrum (neat) 1720 cm.-1 (C= 0) (Note 12). [Pg.14]

ALDEHYDES FROM 2-BENZYL-4,4,6-TRIMETHYL-5,6-DIHYDRO-l,3(4H)-OXAZINE 1-PHENYLCYCLOPENTANECARBOXALDEHYDE... [Pg.24]

The synthesis of 1-phenylcyclopentanecarboxaldehyde (4) from 2-benzyl-4,4,6-trimethyl-5,6-dihydro-l,3-(4H)-oxazine (1) has been published.2... [Pg.578]

See other pages where 1-PHENYLCYCLOPENTANECARBOXALDEHYDE is mentioned: [Pg.13]    [Pg.25]    [Pg.27]    [Pg.13]    [Pg.25]    [Pg.27]    [Pg.274]   
See also in sourсe #XX -- [ Pg.24 , Pg.51 ]

See also in sourсe #XX -- [ Pg.481 , Pg.482 ]

See also in sourсe #XX -- [ Pg.481 , Pg.482 ]

See also in sourсe #XX -- [ Pg.24 , Pg.51 ]



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Aldehydes from 2-Benzyl-4,4,6-trimethyl-5,6-dihydro, 3(4H)-oxazine 1-Phenylcyclopentanecarboxaldehyde

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