公开(公告)号：US20180370887A1

公开(公告)日：2018-12-27

申请号：US16063481

申请日：2016-11-28

Applicant: DSM IP Assets B.V.

Inventor： Ulla LETINOIS ,  Stephan ACKERMANN ,  Jonathan Alan MEDLOCK ,  Hajo LEHMANN

IPC: C07C41/30 ,  C07C43/178 ,  C07C37/07 ,  C07C37/50 ,  C07C39/07 ,  C07C39/08 ,  B01J31/24 ,  B01J31/22 ,  B01J31/18

Abstract: The present invention relates to a method of preparing ortho substituted phenols from 2,5-dimethylfuran and propargyl ethers in the presence of a gold(I) complex. It is particularly advantageous to use 2,5-dimethylfuran as this offers an ecological beneficial synthesis of said ortho substituted phenols.

公开(公告)号：US20200123087A1

公开(公告)日：2020-04-23

申请号：US16720580

申请日：2019-12-19

Applicant: DSM IP Assets B.V.

Inventor： Ulla LETINOIS ,  Stephan ACKERMANN ,  Jonathan Alan MEDLOCK ,  Hajo LEHMANN

IPC: C07C41/30 ,  C07C39/08 ,  C07C39/07 ,  B01J31/24 ,  B01J31/22 ,  B01J31/18 ,  C07C43/178 ,  C07C37/50 ,  C07C37/07 ,  C07C41/36 ,  C07C46/08 ,  C07D311/72

Abstract: The present invention relates to a method of preparing ortho substituted phenols from 2,5-dimethylfuran and propargyl ethers in the presence of a gold(I) complex. It is particularly advantageous to use 2,5-dimethylfuran as this offers an ecological beneficial synthesis of said ortho substituted phenols.

公开(公告)号：US20160145228A1

公开(公告)日：2016-05-26

申请号：US14902871

申请日：2014-07-03

Applicant: DSM IP ASSETS B.V.

Inventor： Ulla LETINOIS ,  Thomas NETSCHER ,  Stephan ACKERMANN

IPC: C07D311/22

CPC classification number: C07D311/22

Abstract: The present invention relates to a synthesis of chromanones or chromanes in a stereospecific matter in view of the 2-position in the chromanone or chromane ring. It has been found that this synthesis is particularly possible in the presence of a chiral compound of formula of a specific type and of at least one urea or thiourea.

Abstract translation: 本发明涉及在苯并二氢吡喃酮或苯并二氢吡喃环中2-位的立体特异性物质中的色满酮或色烷的合成。 已经发现，在具有特定类型的式的手性化合物和至少一种脲或硫脲的存在下，这种合成是特别有可能的。