Composition and properties of the reaction products of p-cresol with camphene
作者:I. Yu. Chukicheva、E. V. Buravlev、I. A. Dvornikova、I. V. Fedorova、G. A. Chernysheva、O. I. Aliev、V. I. Smol’yakova、A. M. Anishchenko、A. V. Sidekhmenova、M. B. Plotnikov、A. V. Kutchin
DOI:10.1007/s11172-019-2509-0
日期:2019.5
The products of the reaction between p-cresol and camphene were isolated and characterized. Their antiradical activity and toxicity were studied. The pharmacological activity of the most active stereoisomer of 2,6-diisobornyl-4-methyl phenol in rats with a model of streptozotocin diabetes was studied. Under these conditions, the investigated compound during course administration improves micro- and
Scandium versus yttrium{amino-alkoxy-bis(phenolate)} complexes for the stereoselective ring-opening polymerization of racemic lactide and β-butyrolactone
作者:Yulia Chapurina、Joice Klitzke、Osvaldo de L. Casagrande Jr.、Mouhamad Awada、Vincent Dorcet、Evgueni Kirillov、Jean-François Carpentier
DOI:10.1039/c4dt01206b
日期:——
yttrium complexes all bear an extra THF-coordinated molecule and are 6-coordinated. ScONXOR1,R2}(N(SiHMe2)2) complexes are single-site initiators for the ring-openingpolymerization (ROP) of racemic lactide but are less active than their yttrium analogues YONXOR1,R2}(N(SiHMe2)2)(THF); also, in contrast to the latter ones, they are inactive in the ROP of the more demanding racemic β-butyrolactone. On
dium和钇酰胺络合物Ln ONXO R1,R2 }(N(SiHMe 2)2)(THF)n(Ln = Sc,n = 0或Y,n = 1; X = NMe 2或OMe; R 1 =枯基或p -Cl枯基; R 2由LN [N(SiHMe的氨解来制备= Me或枯基)2)2 ] 3(THF)与相应的四齿二氨基或烷氧基氨基双(苯酚)亲配体ONXO R1,R2 } H 2。在固态和甲苯溶液中,the络合物为单体且呈5位配位,而类似的钇络合物均带有额外的THF配位分子且为6配位。Sc ONXO R1,R2 }(N(SiHMe 2)2)配合物是消旋丙交酯开环聚合(ROP)的单中心引发剂,但活性不如钇类似物Y ONXO R1,R2 }(N (SiHMe 2)2)(THF);而且,与后者相反,它们在要求更高的外消旋β-丁内酯的ROP中没有活性。在另一方面中,钪酰胺络合物展出超过丙交酯的ROP一个显著改