Abstract: The invention relates to high-functionality polyether polyols of the general formula where each R?1 is an unsubstituted or substituted aliphatic or aromatic radical and each R?2 is an unsubstituted or substituted aliphatic or aromatic radical, H, OH, polyalkyl ether chain or halogen, each X is a polyalkyl ether chain or H, where at least one X is a polyalkyl ether chain, and m is an integer from 0 to 20, where Xm is H when m is 0, and n is an integer from 4 to 12, to processes for preparing such high-functionality polyether polyols and also to the use thereof for preparing polyurethanes and nonionic surfactants.

Abstract: Chromanylascorbic acid derivatives of the general formula I ##STR1## where R.sup.1 is an organic radical having 1 to 12 C atoms, in particular a methyl group,R.sup.2 is an organic radical having 8 to 30 C atoms, which is unsubstituted or substituted by functional groups, in particular the phytyl 30 radical, andR.sup.3 is the --PO.sub.3 H.sub.2 -- radical or a glycosidyl radical,R.sup.3, R.sup.4 and R.sup.5 are hydrogen, or an alkyl or acyl group having 1 to 20 C atoms, in particular hydrogen, andR.sup.

Abstract: A process for the preparation of chromanyl derivatives of the formula I ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.8 -alkyl, aryl, aralkyl, Si(R.sup.4).sub.3, C(.dbd.O)R.sup.4 or C.sub.1 -C.sub.4 -alkoxymethyl,R.sup.2 and R.sup.3 are hydrogen or C.sub.1 -C.sub.3 -alkyl, andR.sup.4 is C.sub.1 -C.sub.8 -alkyl or aryl,which comprises decarboxylating 5-carboxychromanyl derivatives of the formula II ##STR2## where the substituents R.sup.1 to R.sup.3 are as defined above and 5-carboxylchromanyl derivatives of the formula II.

Abstract: The present invention relates to a process for preparing protected amines or amino acids. The invention furthermore relates to the use of tocopheryl radicals or radicals derived therefrom as protective groups for amines and amino acids, and to compounds obtained in this process as intermediates and to processes for preparing dipeptides and oligopeptides.

Abstract: The present invention relates to a process for preparing protected amines or amino acids. The invention furthermore relates to the use of tocopheryl radicals or radicals derived therefrom as protective groups for amines and amino acids, and to compounds obtained in this process as intermediates and to processes for preparing dipeptides and oligopeptides.

Abstract: The proposed method resides in that alkylene oxide is subjected to interaon with a polyhydric alcohol in a multisectional reaction zone. A monomer and a polyhydric alcohol are introduced into the first section of the reaction zone, the polyhydric alcohol containing a catalyst in the form of a solution of an alkali metal alcoholate with an alkaline content of 1-20 wt. % as calculated for KOH and with a water content in the solution from 0.05 to 0.5 wt. %. The reaction is conducted in such a way that the initial components interact in the first section at a molar ratio of 1-5:1.The proposed method makes it possible to produce polyethers that are uniform with respect to the chemical composition (molecular-weight distribution and distribution according to the types of the functionality) and with minimum impurity content.