Calorimetric and spectroscopic investigations into the stability of SiCl4 and SnCl4 complexes.

Structure Elucidation of N-aryl-2-chloro-3-oxobutanamides with respect to intra- and intermolecular hydrogen bonding

“…1,3,4 Compound was prepared from N-(4-fluorophenyl)-3-oxobutanamide (10 mmol, 1.9 g of the crude product). 1,3,4 Compound was prepared from N-(4-fluorophenyl)-3-oxobutanamide (10 mmol, 1.9 g of the crude product).…”

“…1 We are interested in structural aspects of this class of compounds particularly with respect to intra-and intermolecular hydrogen bonding. 1,3,4 N-Aryl-3-oxobutanamides have been obtained from substituted anilines and ethyl acetoacetate by the ester-amine method. 2 We have synthesised derivatives 1b-e by chlorination of N-aryl-3-oxobutanamides with sulfuryl chloride in toluene.…”

“…2 We have synthesised derivatives 1b-e by chlorination of N-aryl-3-oxobutanamides with sulfuryl chloride in toluene. 6 Apart from butanamides 1a 3,7,8 and 1d 3,8 no spectroscopic data of N-aryl-2-chloro-3oxobutanamides have been found in the literature. 5 The characterisation of derivatives 1b-d corresponds to literature data.…”

“…2 We have synthesised derivatives 1b-e by chlorination of N-aryl-3-oxobutanamides with sulfuryl chloride in toluene. 1,3,4 N-Aryl-3-oxobutanamides have been obtained from substituted anilines and ethyl acetoacetate by the ester-amine method. 5 The characterisation of derivatives 1b-d corresponds to literature data.…”

“…5 The characterisation of derivatives 1b-d corresponds to literature data. 6 Apart from butanamides 1a 3,7,8 and 1d 3,8 no spectroscopic data of N-aryl-2-chloro-3oxobutanamides have been found in the literature. Therefore, IR spectra in KBr as well as in CDCl 3 solution and 1 H NMR spectra were recorded, see Table 1.…”