Detail of "13623-94-4"

Reference

Light stabilizers for low-molecular weight and high-molecular-weight organic compounds

Light stabilizers for low-molecular weight and high-molecular-weight organic compounds. Schulz, Manfred; Wegwart, Herbert; Wolniak, Otto; Schlimper, Rolf; Krause, Horst (E. Ger. ). Ger. (East) DD 124054 2 Feb 1977,8 pp. 13623-94-4 is the cas registry number. 13623-94-4 is the cas registry number. This chemical is also mentioned in this article. This chemical is also mentioned in this article. (German). (German Democratic Republic). CODEN: GEXXA8. CLASS: IC: C08K005-16. APPLICATION: DD 76-191349 20 Feb 1976. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) (MeS)2C:CHNO2 (I) [13623-94-4], (Me2N)2C:CHNO2 [42506-13-8], 1-anilino-1-methylthio-2-nitroethylene [13624-01-6], and 2 similar nitroethylene derivs. were useful as light stabilizers for polyethylene (II) [9002-88-4], Tetralin [119-64-2], and similar materials. Thus, II contg. 0.2% I had carbonyl extinction coeff. 0.15 after 3000 h of accelerated weathering in UV light, compared with 0.21 for II contg. no I. ..

A novel 1,6-cyclization of imidazolium N-allylides

A novel 1,6-cyclization of imidazolium N-allylides. 2. Formation of the mesomeric betaine, 7-iminoimidazo[1,2-a]pyridiniumide. 33884-41-2 and 13623-94-4 are also occured in this study. Matsuda, Yoshiro; Gotou, Hiromi; Katou, Keisuke; Matsumoto, Hiroshi; Yamashita, Makoto; Takahashi, Kimitoshi; Ide, Shizuki; Furuno, Kazuki; Torisu, Katsura (Sch. Pharm. Sci., Nagasaki Univ., Nagasaki 852, Japan). Heterocycles, 32(11), 2217-24 (English) 1991. CODEN: HTCYAM. ISSN: 0385-5414. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) Treatment of imidazolium N-allyide I in refluxing 1,2,4-trimethylbenzene resulted in 1,6-cyclization to give the mesomeric betaine, 7-iminoimidazo[1,2-a]pyridiniumide II. On the other hand, heating of 1-cyanoimidoylmethylimidazolium N-ylide III in refluxing 1,2,4-trimethylbenzene underwent 1,6-cyclization and debenzylation to give 8-aminoimidazo[1,2-a]pyrazine IV. Furthermore, treatment of the imidazolium salt V and Et ethoxymethylenenitroacetate with K2CO3 in DMSO afforded the mesomeric betaine, imidazo[1,2-a]pyridiniumide VI, whereas the reaction of V and nitroketene dithioacetal (MeS)2C:CHNO2 with K2CO3 in DMSO resulted in 1,5-dipolar cyclization to produce pyrrolo[1,2-a]imidazole VII and pyrrolo[1,2-a]pyrazine VIII. .