Polysubstituted 2-morpholones, related compounds, processes for their preparation, and U-V light stabilized compositions
申请公布号:US4914232(A)
申请号:US19870101523
申请日期:1987.09.28
申请公布日期:1990.04.03
发明人:LAI, JOHN TA-YUAN
分类号:C07D265/32;C07D265/34;C07D273/00;C07D295/02;C07D295/023;C07D295/027
主分类号:C07D265/32
摘要:An essentially single stage reaction has been discovered in which a disubstituted ethanolamine, that is, a 2,2'-substituted-2-aminoethanol, may be reacted with a haloform and a carbonyl containing compound selected from the group consisting of monoketones and benzaldehyde, in the presence of an alkali metal hydroxide, and optionally in the presence of a phase transfer catalyst, to produce an alkali metal hydroxyethylaminoacetate ("HEAA") which has N-adjacent C atoms on which there are a total of at least three substituents (hence "polysubstituted"), and one or both pairs of substituents on each N-adjacent C atom may be cyclized. The HEAA may be cyclized by the action of a mineral acid to produce a 2-morpholone hydrochloride which is characterized by having a total of at least three substituents on the N-adjacent C atoms of the ring. The 2-morpholone so produced may be reduced to a polysubstituted aminodiol. The aminodiol so produced may be cyclized with an alkane sulfonic acid to yield a polysubstituted morpholine which could not otherwise have been made. The aminodiol may also be alkylated to produce diethers with polysubstituted N-adjacent C atoms. If the aminodiol is tosylated, a polysubstituted crown ether is produced with plural polyalkylene groups. The foregoing HEAA and related compounds are used as u-v light stabilizers in novel compositions in which a small but effective amount of one or more of the HEAA and related compounds is incorporated, in an amount sufficient to produce desirable stabilization against degradation by u-v light in a wide variety of organic materials.
METHOD OF PRODUCING SILVER OXIDE *2* BATTERY
BEARING LUBRICATING METHOD FOR REVOLUTION VOLUME TYPE COMPRESSOR
FREMGANGSMADE APPARAT OG INSTILLATION TIL VARMESVEJSNING AF FOLIER AF PLASTMATERIALE
TYRISTORTENDNINGSANORDNING INNEFATTANDE ETT AKUSTISKT YTVAGSDON
AVRULLARE FOR PA EN TRUMMA UPPLINDAD KABEL, LINA, TRAD, ELLER LIKNANDE
KRETSANORDNING FOR TIDSMULTIPLEXOVERFORING AV ASYNKRONT UPPTREDANDE BINERVERDEN AV DATA
MASKIN FOR KRYMPNING AV EN TEXTIL- ELLER PAPPERSBANA
MATERIALI TERMOPLASTICI IRROBUSTITI CON STUOIE DI FIBRE DI VETRO AVENTI RIGIDITA' AUMENTATA.
FESTANORDNING, FORETREDESVIS AVSEDD FOR FASTHALLNING AV MERKLAPPAR PA KOTT
PROCESSO PER LA SEPARAZIONE DICERE.