公开(公告)号：US06395914B1

公开(公告)日：2002-05-28

申请号：US09493906

申请日：2000-01-28

Applicant: Frank Bauer ,  Chitoor Subramaniam

Inventor： Frank Bauer ,  Chitoor Subramaniam

IPC: C07C5100

CPC classification number: C07C41/54 ,  C07C67/293 ,  Y02P20/582 ,  C07C69/003 ,  C07C69/21 ,  C07C43/303

Abstract: A process directed to the preparation of acetals of malondialdehyde by reacting alkylvinyl ethers or esters with ortho formates in the gas phase with a heterogeneous catalyst.

Abstract translation: 通过使烷基乙烯基醚或酯与气相中的原甲酸酯与非均相催化剂反应来制备丙二醛缩醛的方法。

公开(公告)号：US06355844B1

公开(公告)日：2002-03-12

申请号：US09494255

申请日：2000-01-28

Applicant: Frank Bauer ,  Chitoor Subramaniam

Inventor： Frank Bauer ,  Chitoor Subramaniam

IPC: C07C4330

CPC classification number: B01J31/0231 ,  B01J27/10 ,  B01J31/20 ,  B01J31/2234 ,  B01J31/2291 ,  B01J31/2295 ,  B01J31/2404 ,  B01J31/30 ,  B01J2231/32 ,  B01J2531/82 ,  B01J2531/822 ,  B01J2531/824 ,  B01J2531/828 ,  C07C67/293 ,  C07C69/003 ,  C07C69/21

Abstract: Process for the preparation of malondialdehyde-derivatives by reacting vinylesters with orthoesters in the presence of a precious metal catalyst.

Abstract translation: 在贵金属催化剂存在下使乙烯基酯与原酸酯反应制备丙二醛衍生物的方法。

公开(公告)号：US6153752A

公开(公告)日：2000-11-28

申请号：US494258

申请日：2000-01-28

Applicant: Frank Bauer ,  Chitoor Subramaniam

Inventor： Frank Bauer ,  Chitoor Subramaniam

IPC: C07D231/14 ,  C07D239/42 ,  C07D261/18 ,  C07D239/26 ,  C07D231/12 ,  C07D261/12

CPC classification number: C07D239/42 ,  C07D231/14 ,  C07D261/18

Abstract: Process for the preparation of heterocycles by reacting 2-substituted acetals of malondialdehyde with a reactant selected from hydroxylamines and their salts, hydrazines and their salts, formamid, amidines and their salts, guanidines and their salts, aminoguanidines and their salts, nitroguanidine and their salts, O-alkyl-isoureas and their salts, O-cycloalkyl-isoureas and their salts, O-aralkyl-isoureas and their salts, O-aryl-isoureas and their salts, S-alkyl-isothioureas, S-cycloalkyl-isothioureas, S-aralkyl-isothioureas, S-arylisothioureas, S-alkyl-isothiouronium salts, S-cycloalkyl-isothiouronium salts, S-aralkyl-isothiouronium salts, S-aryl-isothiuronium salts, thiourea and urea.

Abstract translation: 通过丙二醛的2-取代缩醛与选自羟胺及其盐，肼及其盐，甲酰胺，脒及其盐，胍及其盐，氨基胍及其盐，硝基胍及其盐的反应制备杂环的方法 ，O-烷基 - 异脲和它们的盐，O-环烷基 - 异脲和它们的盐，O-芳烷基 - 异脲和它们的盐，O-芳基 - 异脲和它们的盐，S-烷基 - 异硫脲，S-环烷基 - 异硫脲，S N-烷基异硫脲，S-芳基异硫脲，S-烷基异硫脲鎓盐，S-环烷基 - 异硫脲鎓盐，S-芳烷基 - 异硫脲鎓盐，S-芳基 - 异硫脲鎓盐，硫脲和尿素。

公开(公告)号：US06452042B1

公开(公告)日：2002-09-17

申请号：US09494256

申请日：2000-01-28

Applicant: Frank Bauer ,  Chitoor Subramaniam

Inventor： Frank Bauer ,  Chitoor Subramaniam

IPC: C07C6730

CPC classification number: C07C69/734

Abstract: Substituted propenoates are prepared by eliminating an alcohol from a substituted malondialdehyde acetal, optionally in the presence of a homogeneous or heterogeneous catalyst.

Abstract translation: 取代的丙烯酸酯通过任选地在均相或非均相催化剂存在下从取代的丙二醛缩醛中除去醇来制备。

公开(公告)号：US06395920B1

公开(公告)日：2002-05-28

申请号：US09493908

申请日：2000-01-28

Applicant: Frank Bauer ,  Chitoor Subramaniam

Inventor： Frank Bauer ,  Chitoor Subramaniam

IPC: C07C25513

CPC classification number: C07C253/30 ,  C07B41/04 ,  C07C41/54 ,  C07C67/347 ,  Y02P20/582 ,  C07C69/66 ,  C07C255/13 ,  C07C43/315

Abstract: A process directed to the preparation of 2-substituted and 2,2-disubstituted acetals of malondialdehyde from ortho formates and substituted vinyl ethers in the presence of an acidic catalyst.

Abstract translation: 一种在酸性催化剂存在下从原甲酸酯和取代的乙烯基醚制备丙二醛的2-取代和2,2-二取代缩醛的方法。