Detail of "16225-26-6"

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Synthesis of [2]rotaxanes by tritylative endcapping of in situ formed pseudorotaxanes having thiol or hydroxyl functionality on the axle termini

Synthesis of [2]rotaxanes by tritylative endcapping of in situ formed pseudorotaxanes having thiol or hydroxyl functionality on the axle termini. Furusho, Yoshio; Rajkumar, G. Abraham; Oku, Tomoya; Takata, Toshikazu (Graduate School of Engineering, Department of Applied Chemistry, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan). Tetrahedron, 58(33), 6609-6613 (English) 2002 Elsevier Science Ltd. CODEN: TETRAB. ISSN: 0040-4020. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) Tritylative endcapping of an in situ formed pseudorotaxane consisting of dibenzo-24-crown-8 and an axle having a thiol group at the end by treatment with trityl hexafluorophosphate at room temp. gave the corresponding sulfide-type [2]rotaxane I (X = S, n = 1) in high yields. Similar treatment of the pseudorotaxane having a hydroxyl group at the axle terminal with trityl hexafluorophosphate followed by addn. of a base such as triethylamine afforded the corresponding ether-type [2]rotaxane I (X = O, n = 2) in good yields.In this study，16225-26-6 is also used. 16225-26-6 is the cas registry number. This chemical is also mentioned in this article. ..

Rotaxanes with controlled number of rings, their topological crosslinking agents, manufacture, method for crosslinking of polymers, and polymers crosslinked with them

Rotaxanes with controlled number of rings, their topological crosslinking agents, manufacture, method for crosslinking of polymers, and polymers crosslinked with them. Takada, Toshikazu; Shioya, Masahiro; Oku, Tomoya (Tokyo Institute of Technology, Japan). Jpn.Chemical with cas number 16225-26-6 also plays role. 16225-26-6 is the cas registry number of certain chemical which is used as reagents here. Kokai Tokkyo Koho JP 2006028103 A2 2 Feb 2006, 17 pp. (Japanese). (Japan). CODEN: JKXXAF. APPLICATION: JP 2004-210336 16 Jul 2004. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Section cross-reference(s): 28, 35 The rotaxanes comprise rods R1R2R1 (R1 = end-capping monovalent group; R2 = linear divalent group) and 32 crown ethers bearing 31 functional groups. Thus, dibenzo-24-crown-8 bearing two CH2SCOMe (manufd. from dibenzo-24-crown-8 in 4 steps) was treated with PCH2NH2+(CH2)3OH.PF6- [P = 3,5-di(tert-butyl)phenyl; manufd. from 3,5-di-tert-butyltoluene in 3 steps] and polytetrahydrofuran m-phenylene diisocyanate carbamate (1:2) in the presence of dibutyltin dilaurate, N-acetylated with Ac2O, and S-deacetylated to give rotaxane I (R = -m-C6H4-NHOCO(C4H8O)nOCNH-m-C6H4-) (II). Polybutanediol 2,4-TDI carbamate (1:2) was crosslinked with II in the presence of dibutyltin dilaurate in CHCl3 and dried to give a flexible yellow solid. ..