公开(公告)号：DE3260414D1

公开(公告)日：1984-08-30

申请号：DE3260414

申请日：1982-01-28

Applicant: BASF AG

Inventor： HORNER MICHAEL DR ,  HORN DIETER DR ,  LUEDDECKE ERIK DR ,  TEEGE GERNOT DR

IPC: C07D311/72 ,  C07D311/58 ,  C07D311/70 ,  C08K5/15 ,  C08K5/378

Abstract: Novel chroman derivatives I where R1, R2, R3, R4 and R5 are each H or C1-C4-alkyl, R6 and R7 are each H, C1-C4-alkyl or aryl, m is 1, 2 or 3, and R8 is alkyl or alkenyl of up to 30 carbon atoms, the preparation of these compounds, and their use as stabilizers for organic materials.

公开(公告)号：DE3160251D1

公开(公告)日：1983-06-16

申请号：DE3160251

申请日：1981-03-09

Applicant: BASF AG

Inventor： HORNER MICHAEL DR ,  NISSEN AXEL DR

IPC: C07D311/72 ,  B01J27/08 ,  C07B61/00 ,  C07D311/58

Abstract: 2-Hydroxyalkylchromans (I) I where R1, R2, R3 and R4 are each H or C1-C8-alkyl, R' is H or an organic radical which can be split off hydrolytically or hydrogenolytically as R'-OH or R'-COOH, and m is 1, 2 or 3, are prepared by reacting a hydroquinone II II (a) with an alkenediol IIIa IIIa or (b) with an alkenediol IIIb IIIb or (c) with an alkenediol IIIc IIIc where R4' is a radical which during the condensation with II is converted to the radical R4, at from -50 DEG C. to 120 DEG C., in an inert solvent, in the presence of from 10 to 300 mole %, based on II, of a Lewis acid or of an adduct of a Lewis acid with a Lewis base which has a lower basicity than compound II.

公开(公告)号：DE3010474A1

公开(公告)日：1981-10-01

申请号：DE3010474

申请日：1980-03-19

Applicant: BASF AG

Inventor： HORNER MICHAEL DR ,  NISSEN AXEL DR

IPC: C07C69/73 ,  C07C51/00 ,  C07C51/353 ,  C07C59/52 ,  C07C59/58 ,  C07C59/64 ,  C07C67/00 ,  C07C67/343 ,  C07C69/732 ,  C07C69/734 ,  C08K5/10 ,  C08K5/13

Abstract: 4-(2,5-Dihydroxyphen-1-yl)-crotonic acid and its derivative (I) I where R1, R2, R3 and R4 are each H or C1-C8-alkyl, R5 is H, C1-C30-alkyl or C2-C30-alkenyl, and R' is H or an organic radical which can be split off hydrogenolytically, and a process for the preparation of the compounds I, wherein a hydroquinone II II is reacted, in the presence of from 0.1 to 2 moles of a Lewis acid per mole of II, with (a) a vinylglycolic acid derivative IIIa IIIa or (b) a crotonic acid derivative IIIb IIIb where X is halogen, hydroxyl or C1-C4-alkoxy or acyloxy.