Reference

N-Alkyllactams

N-Alkyllactams. (Ato Chimie, Fr.). Neth. Appl. NL 7503940 5 Oct 1976, 11 pp. (Dutch). (Netherlands). CODEN: NAXXAN. CLASS: IC: C07D225-02. APPLICATION: NL 75-3940 2 Apr 1975. DOCUMENT TYPE: Patent CA Section: 35 (Synthetic High Polymers) Section cross-reference(s): 27 Pure N-alkyllactams are obtained by treating the reaction mixts., contg. cycloalkylenimine impurities, with gaseous CO2 at room temp. to ppt. the impurity as insol. carbonate, sepg. the ppt., and then pptg. the desired lactam. Thus, 98.7 g dodecanolactam [947-04-6] and xylene at 80.degree. was treated with 9.2 g Na metal and then with 72 g 1-bromoheptane [629-04-9], and stirred 2 h at 130.degree.. Their reaction mixt. was cooled to 70.degree., sepd. from NaBr ppt., cooled to room temp., freed of pptd.In this experiment, several chemicals are used like 58331-36-5 and 58331-38-7 unreacted lactam, treated with a CO2 gas stream, sepd. from the pptd. cyclododecamethylenimine, freed of solvent, and distd., giving high purity N-heptyl dodecanolactam [58331-39-8]. .

The 1-bromoheptane photodissociation near 234 nm

All Rights Reserved. The 1-bromoheptane photodissociation near 234 nm. Qu, Hongbo; Li, Haiyang; Liang, Feng; Zhang, Bing (Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, Peop. Rep.Chemicals with cas numbers 629-04-9 and 10097-32-2 also play role. China). Chemical Physics, 330(3), 355-359 (English) 2006 Elsevier B.V. CODEN: CMPHC2. ISSN: 0301-0104. DOCUMENT TYPE: Journal CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) Section cross-reference(s): 22 The photodissocn. of n-C7H15Br, near the red wing of the absorption A-band, has been investigated utilizing the velocity mapped ion imaging technique. Both the speed and angular distributions of Br*(2P1/2) and Br(2P3/2) fragments were detd. The exptl. data indicate that the photodissocn. in the investigated range originates from adiabatic and non-adiabatic transitions of the three low-lying dissociative electronic states. The fragments kinetic energies and the angular distributions show that about 70% energy is deposited into the internal energy of the fragments. These results can be explained using soft impulsive model. The expt. also shows that the anisotropy parameter for Br* is sensitive to the photolysis wavelength. .