Synthesis and photoinitiated cationic polymerization of 1,2,3-tris(1-propenoxy) propane

The synthesis of 1,2,3-tris (1-propenoxy) propane (GTPE) was carried out by the rearrangement of 1,2,3-tris(2-propenoxy) propane (glycerol triallyl ether, GTAE) and the Z: E isomer composition of the GTPE was determined using gas chromatography and ¹HNMR. The photoinitiated cationic polymerization of the GTPE was studied using realtime infrared spectroscopy (RTIR). Employing the data from these studies, rates of polymerization for the respective E and Z propenyl ether double bonds were calculated. The rate of incorporation of Z-double bonds of GTPE into the crosslinked polymer matrix is 1.6 times that of E-double bonds. The effects of oxygen and several other free radical polymerization inhibitors were investigated. An increase in the photogel time and decrease of the gel-content in the presence of these inhibitors implicates the involvement of free radicals in the process of the generation of propagating cationic centers when diaryliodonium salt cationic photoinitiators are used. © 1994 John Wiley & Sons, Inc.     

Construction and anion exchange of silver(I) complexes bearing 1,2,3-tris(isonicotinoyloxy)benzene

Transition Metal Chemistry - A new potentially tridentate ligand 1,2,3-tris(isonicotinoyloxy)benzene (L) was prepared, and its coordination chemistry with various silver(I) salts AgX...     

Metalation of 2-chloromethyl-2-oxazolines: synthesis of 1,2,3-tris(oxazolinyl)cyclopropanes and derivatives

2-Chloromethyl-2-oxazoline converts cleanly into trans-1,2,3-tris(oxazolinyl)cyclopropane upon treatment with strong bases such as LDA or KN(SiMe(3))(2). Deprotonation of the above cyclopropane followed by the addition of electrophiles allows the preparation of more functionalized tris(oxazolinyl)cyclopropanes.     

Structure of the reaction products of the 2-p-dimethylaminoanil of 1,3-dimethyl-1,2,3-propanetrione with trimethyl phosphite and Tri(dimethylamino)phosphine

Conclusions Tri(dimethylamino)phosphine and trimethyl phosphite react with the 2-p-dimethylaminoanil of 1,3-dimethyl-1,2,3-propanetrione to form a bipolar 11 adduct with a P-N bond.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 436–438, February, 1979.The authors wish to thank E. I. Gol'dfarb and R. G. Gainullina for recording the³¹P NMR and PMR spectra.     

2,4,6-三(对甲基苯乙烯基)均三嗪的合成、结构及其光学性质

合成了八极分子2,4,6-三(对甲基苯乙烯基)均三嗪[即2,4,6-tris(p—methylstyryl)-s-triazine,缩写为TMSTA],用四圆X衍射法测得该晶体属于正交晶系的Pmn21空间群,晶体结构非中心对称,分子构型为微弯曲的平面三角形,具有近似的D3h对称性．该化合物在氯仿中最长波长吸收峰位于337nm,在极性较强的溶剂乙腈中的荧光发射峰位于435nm．在1064nm皮秒脉冲基频光下,测得其粉末的倍频光强度为尿素的9．1倍．另外,TMSTA良好的热稳定性(熔点为235～237℃)增加了其作为1064nm Nd：YAG激光的倍频材料的应用价值．     

Modular synthesis of a new family of tripodal ligands, all-cis-1,2,3-tris(diphenylphosphinomethyl)cyclopropane and relatives

Bisbenzyl-protected all-cis-1,2,3-tris(hydroxymethyl)cyclopropane has been obtained in three steps from commercially available cis-2-butene-1,4-diol (75% overall yield) and used to prepare a number of all-cis-1,2,3-trisubstituted cyclopropane derivatives. Among them, the new tripodal ligand all-cis-tris(diphenylphosphinomethyl)cyclopropane (TriCyp-PPP) has been demonstrated to furnish-with pi-allylpalladium chloride dimer-a highly active catalyst for the allylation of diethyl methylmalonate enolate with allyl acetate.