Infrared spectrum, benzaldehyde

Infrared spectrum, benzaldehyde, 730 butanoic acid, 771 cyclohexane., 436 cyclohexanol, 633 cyclohexanone, 730 cyclohexene. 436 cyclohexylamine, 952 diethyl ether, 671 ethanol, 421 hexane. 424 1-hexene, 424 1-hexyne, 424 phenol, 633... 

Note. (1) The reaction may be monitored by observing the diminution of carbonyl absorption in the infrared spectrum of successive samples withdrawn from the organic phase, after allowing the dichloromethane to evaporate from a portion placed on a sodium chloride plate. Alternatively samples of the reaction medium may be analysed by g.l.c. using a 10 per cent Carbowax column on Chromosorb W held at 150 °C with a nitrogen carrier gas flow rate of 40ml/minute benzaldehyde has tR 2 minutes and phenyloxirane has tR 2.75 minutes. 

Treatment of A -acetylglycine (4) with benzaldehyde in the presence of sodium acetate and acetic anhydride gave compound A, C,H NOi, which did not possess OH or NH absorption in the infrared spectrum. When compound A was heated with water it gave acid B, C, H,N03. Identify compounds A and B. 

Infrared spectrum of benzaldehyde (neat liquid, salt plates). 

Benzaldehyde The infrared spectrum of this aromatic aldehyde (Fig. 6.35) is rich and interesting. The aromatic aldehyde macro group frequency consists of the following peaks 3070,2830 and 2750,1706,1602,1589, and 1396 cm. ... 

Figure 2. Difference infrared spectra before and after visible light photolysis of toluene and oxygen in zeolites BaX and BaY near room temperature with A > 400 nm. Toluene losses are indicated by asterisks. Also shown is an authentic spectrum of benzaldehyde adsorbed in BaYfor comparison with product spectra.

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