公开(公告)号：DE59804528D1

公开(公告)日：2002-07-25

申请号：DE59804528

申请日：1998-07-20

Applicant: BASF AG

Inventor： HIEBER GISELA ,  EBEL KLAUS

IPC: C07B61/00 ,  C07C41/42 ,  C07C41/56 ,  C07C43/303

Abstract: A process for preparing acetals of the formula Iwherea) the Rs are, independently of one another, a C1-C20-alkyl or C3-C20-alkenyl radical, orb) the two R radicals together form the members of an unsubstituted or C1-C10-alkyl-substituted 5- to 7-membered cyclic acetal,by reacting 3-methyl-2-butenal in the presence of sulfamic acid, of a N-(C1-C8-alkyl)sulfamic acid or of a N,N-di(C1-C8-alkyl)sulfamic acid as catalyst with:an alcohol of the formula R-OH (IIa), oran orthoester of the formula HC-(OR)3 (III) ora mixture of an alcohol of the formula (IIa) and an orthoester of the formula (III), oran alcohol of the formula HO-(CH2)m-OH (IIb), where m is a number from 2 to 4, and (CH2)m group in the alcohol IIb may be substituted by a C1-C10-alkyl group.

公开(公告)号：DE10232750A1

公开(公告)日：2004-02-05

申请号：DE10232750

申请日：2002-07-18

Applicant: BASF AG

Inventor： WARTINI ALEXANDER ,  EBEL KLAUS ,  HIEBER GISELA ,  WEIGL HAGEN

IPC: C07B61/00 ,  C07C45/48 ,  C07C49/385 ,  C07C49/587 ,  C07C45/45

公开(公告)号：CA2492553A1

公开(公告)日：2004-01-29

申请号：CA2492553

申请日：2003-07-10

Applicant: BASF AG

Inventor： WEIGL HAGEN ,  WARTINI ALEXANDER ,  EBEL KLAUS ,  HIEBER GISELA

IPC: C07B61/00 ,  C07C45/48 ,  C07C49/385 ,  C07C49/587

Abstract: The invention relates to a method for producing macrocyclic ketones of gener al formula (I) by direct cyclisation of compounds of general formula (II) in th e gas phase on a heterogeneous catalyst. In general formula (I), X represents a monounsaturated or polyunsaturated or saturated C10-C17 alkyl radical which can be optionally substituted by a C1-C6 alkyl radical, and in general formu la (II), R1, R2 can respectively be the same or different and represent hydroge n or C1-C6 alkyl, and X has the above-mentioned designation.

公开(公告)号：DE10026141A1

公开(公告)日：2001-11-29

申请号：DE10026141

申请日：2000-05-26

Applicant: BASF AG

Inventor： WEIGL HAGEN ,  EBEL KLAUS ,  HIEBER GISELA ,  SCHULZ GERHARD ,  GROENING CARSTEN

IPC: C07C51/285 ,  C07C51/43 ,  C07C59/01 ,  C07C59/10

Abstract: The invention relates to a method for producing poly or monomethylol alkanoic acids of general formula (I), wherein R can be the same or different and means a substituted or unsubstituted aliphatic hydrocarbon or a methylol group, from the corresponding poly or monomethylol alkanals of general formula (II), R having the meaning given above, by oxidation with hydrogen peroxide. A differentiation is made between a starting phase and an end phase of the reaction, the reaction temperature selected during the starting phase being lower than that selected during the end phase and being at least >/= 40 DEG C to 85 DEG C, preferably 60 to 80 DEG C, especially preferably 65-75 DEG C, and the temperature during the end phase being > 85 DEG C-110 DEG C, preferably up to 105 DEG C. The method is used especially for producing dimethylol alkanoic acids from the corresponding dimethylol alkanals, especially for producing dimethylol butanal or dimethylol propanal.

公开(公告)号：AU2003250932A1

公开(公告)日：2004-02-09

申请号：AU2003250932

申请日：2003-07-10

Applicant: BASF AG

Inventor： WARTINI ALEXANDER ,  EBEL KLAUS ,  HIEBER GISELA ,  WEIGL HAGEN

IPC: C07B61/00 ,  C07C45/48 ,  C07C49/385 ,  C07C49/587

公开(公告)号：ES2178254T3

公开(公告)日：2002-12-16

申请号：ES98943743

申请日：1998-07-20

Applicant: BASF AG

Inventor： HIEBER GISELA ,  EBEL KLAUS

IPC: C07B61/00 ,  C07C41/42 ,  C07C41/56 ,  C07C43/303

Abstract: A process for preparing acetals of the formula Iwherea) the Rs are, independently of one another, a C1-C20-alkyl or C3-C20-alkenyl radical, orb) the two R radicals together form the members of an unsubstituted or C1-C10-alkyl-substituted 5- to 7-membered cyclic acetal,by reacting 3-methyl-2-butenal in the presence of sulfamic acid, of a N-(C1-C8-alkyl)sulfamic acid or of a N,N-di(C1-C8-alkyl)sulfamic acid as catalyst with:an alcohol of the formula R-OH (IIa), oran orthoester of the formula HC-(OR)3 (III) ora mixture of an alcohol of the formula (IIa) and an orthoester of the formula (III), oran alcohol of the formula HO-(CH2)m-OH (IIb), where m is a number from 2 to 4, and (CH2)m group in the alcohol IIb may be substituted by a C1-C10-alkyl group.

公开(公告)号：DE19733258A1

公开(公告)日：1999-02-04

申请号：DE19733258

申请日：1997-08-01

Applicant: BASF AG

Inventor： HIEBER GISELA ,  EBEL KLAUS

IPC: C07B61/00 ,  C07C41/42 ,  C07C41/56 ,  C07C43/303

Abstract: The invention relates to a method for producing acetals of formula (I) wherein a) the Rs represent independently from each other a C1-C20 alkyl or C3-C20 alkyl or C3-C20 alkenyl radical or b) both radicals R jointly form units of an optionally C1-C10 alkyl substituted 5-7 membered cyclic acetal, wherein 3-methyl-2-butenal is reacted in the presence of amidosulphonic acid, an N-(C1-C8-alkyl) amidosulphonic acid or an N, N-Di(C1-C8-alkyl)amidosulphonic acid as a catalyst with, in case (a), (a1) an alcohol of general formula (IIa) R-OH wherein R has the meaning cited in (a), a2) an orthoester of general formula (III) HC-(OR)3 wherein R has the meaning cited in (a) or a3) a mixture of an alcohol of general formula (IIa) and an orthoester of general formula (III), and in case (b) with an alcohol of general formula (IIb) wherein m is a number between 2 and 4 and a methylene group in alcohol (IIb) can be substituted by a C1-C10-alkyl group.