Natürliche Fette und Öle – nachwachsende Rohstoffe für die chemische Industrie

Abstract

Natiirliche Fette und Olenachwachsende Rohstoffe fur die chemische Industrie Angcw. Chem. 100 (1988) 41-62 0 VCH Verlagsgesellschaft mbH. D-6940 Weinheim. 1988 Das Vorsatzblatt zeigt als Beispiel fur nachwachscnde Rohstoffe (im Ilhneigersinn. oben Mitte beginnend): Sojabohnen, Rapssamen, Rhizinusbohnen. Olleinsamen, Jojobasamen und Sonnenblumenkerne: in der Mitte des Bildes sind Teile einer Kokospalme mit Friichten zu sehen.

van't Hoff-Le Bel Stranger: Formation of a Phosphonium Cation with a Planar Tetracoordinate Phosphorus Atom

“…Evaporation of the pentane followed by kugelrohr distillation gave 5 carbon compounds is based on the tetrahedron model of methane. [2] Nowadays this geometry is well known in molecular science. Moreover, isoelectronic molecules and ions usually adopt classical tetrahedral structures too.…”

“…[10] The analogous PR 4 ion has not yet been prepared, but ab initio calculations predict the same tetragonal pyramidal geometry as observed for AsR 4 . [11] In our search for a stable tetrametalated phosphonium salt (PR 4 X À , R metal ligand, X any counterion), we found that the tetrametalation of the triphosphenium salt 1 [12] with the Schwartz reagent [(C 5 H 5 ) 2 ZrHCl] (2) [13,14] in the molar ratio of 1:9 in THF and in the presence of triethylamine as an auxiliary base surprisingly leads to the tetrazirconio-substituted phosphonium cation in 3, which adopts an ªanti-vant Hoff ± Le Belº configuration. Compound 3 is diamagnetic, sparingly soluble in aromatic solvents, THF, and CH 2 Cl 2 , but soluble in DMF (but slow decomposition occurs), and has been isolated in an analytically pure state (correct C,H combustion analysis) in the form of green crystals in 11 % yield.…”

“…[1] Various lectins have been identified and characterized with respect to carbohydrate specificity on rat, mice, and mammalian tissues, particularly on the liver. [2] The utility of these carbohydrate ± lectin interactions for receptor-mediated drug targeting has already been explored mainly focussing on liver targeting. [3] Also tumor cells express a distinct lectin pattern on their surfaces.…”

Spectroscopic Examinations, Antimicrobial and Anti-corrosive Evaluations of Polyurethanes Synthesized from Thevetia Peruviana Seed Oil

“…The degradation of the world polity and regional wars are not left out, because their underlying reasons and interest are centered on this limited and non-ecofriendly based material (petroleum) [1][2][3] . Sustainable resource materials like cellulose and starch, proteins, natural rubber and vegetable seed oils are capable of providing eco-friendly chemicals and polymeric based feeds as substitute to petroleum feed stocks 4 .…”

Lewis-acid catalysed ene reaction of electrondeficient aldehydes and ketones at unsaturated fatty acid derivatives

“…In the field of oleochemistry the ene reaction has received only little attention over the past decades, although the reaction products -highly functionalised oleochemicals with a branched alkyl chain -could be very interesting for many industrial applications [6][7][8][9][10][11][12].…”