Process for producing fluorinated isocyanates and carbamates
申请人:REPSOL YPF S.A.
公开号:EP2036884A1
公开(公告)日:2009-03-18
The invention relates to a process for producing fluorinated carbamates comprising the reaction between an amine or polyamine and a fluorinated carbonate, in the presence of a catalyst which does not contain metals and comprises at least one tertiary amine group. The process can also comprise an additional step in which the carbamates are transformed into the corresponding isocyanates.
Phosphorimidates and relatedcompounds (R1R2R3P:NR4) have been prepared by Staudinger reactions between three-co-ordinate phosphorus nucleophiles and azides. I.r., mass, and n.m.r. spectral studies on the compounds are reported. Low-temperature 1H n.m.r. studies suggest that the rotational barrier around the P:N bond in these compounds is below 8 kcal mol–1. Thermal rearrangements of some methyl phosphorimidates
通过三配位磷亲核试剂和叠氮化物之间的斯托丁格反应制备了亚磷酸酯和相关化合物(R 1 R 2 R 3 P:NR 4)。对该化合物进行了Ir,质量和nmr光谱研究。低温1 H nmr研究表明,这些化合物中P:N键周围的旋转势垒低于8 kcal mol –1。已经观察到一些亚氨基磷酸亚磷酸酯热重排为氨基磷酸酯[ P(OMe):NMe → F P(:O)NMe 2 ]。
Synthesis of new exceedingly strong non-ionic bases: RN:P(MeNCH2CH2)3N
作者:Jiansheng Tang、Joel Dopke、John G. Verkade
DOI:10.1021/ja00065a009
日期:1993.6
The syntheses of MeN=P(MeNCH 2 CH 2 ) 3 N (4), [HRNP(MeNCH 2 CH 2 ) 3 N] (CF 3 CO 2 ) (R=Ph, 5(CF 3 CO 2 ); R=Me, 6(CF 3 CO 2 )), [MePhNP(MeNCH 2 CH 2 ) 3 N]I (7(I)), the stable azide adduct MeN 3 P(MeNCH 2 CH 2 ) 3 N (8), and [HRNP(NMe 2 ) 3 ] (CF 3 CO 2 ) (R=Ph, 9(CF 3 CO 2 ) are reported
MeN=P(MeNCH 2 CH 2 ) 3 N (4), [HRNP(MeNCH 2 CH 2 ) 3 N] (CF 3 CO 2 ) (R=Ph, 5(CF 3 CO 2 ))的合成;R= Me,6(CF 3 CO 2 )),[MePhNP(MeNCH 2 CH 2 ) 3 N]I (7(I)),稳定的叠氮化物加合物 MeN 3 P(MeNCH 2 CH 2 ) 3 N (8),和报道了[HRNP(NMe 2 ) 3 ] (CF 3 CO 2 ) (R=Ph, 9(CF 3 CO 2 )
Structure and decomposition of a Staudinger reaction intermediate [1-methyl-(or phenyl-)3-tris(dimethylamino)phosphoranylidenetriazene]
Unstable intermediates (Me2N)3PN3R have been isolated from Staudingerreactions between hexamethylphosphorous triamide and methyl or phenyl azides. N.m.r. data strongly support the presence of a linear skeletal PN–NN framework in these compounds. Kinetic studies of the thermal decomposition of the phenyl derivative in methoxybenzene has afforded activation parameters (ΔH‡ 95 KJ mol–1; ΔS‡–40 J mol–1
A curable composition comprises (a) at least one inorganic or organic compound comprising reactive silane functionality comprising at least one hydrosilyl moiety; (b) at least one inorganic or organic compound comprising reactive silane functionality comprising at least one hydroxysilyl moiety, the hydroxysilyl moiety optionally being generated in situ by hydrolysis of at least one hydrosilyl moiety; and (c) at least one photoactivatable composition that, upon exposure to radiation, generates at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof; with the proviso that, when component (a) is an organic polymer, then component (b) is different from component (a) and is not generated in situ by hydrolysis of component (a).