The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2018
Filed:
Dec. 13, 2011
Rae Kyu Chang, Gyeonggi-do, KR;
Yun Soo Ahn, Seoul, KR;
Heejung Jung, Gyeonggi-do, KR;
Hyerim GA, Seoul, KR;
Juwan Maeng, Gyeonggi-do, KR;
Young-kook Koh, Gyeonggi-do, KR;
Young Hee Lee, Chungcheongbuk-do, KR;
Kwang Jae Lee, Gyeonggi-do, KR;
Joonseo Kim, Gyeonggi-do, KR;
Hyunil Lee, Gyeonggi-do, KR;
Heungsik Yoon, Gyeonggi-do, KR;
Rae Kyu Chang, Gyeonggi-do, KR;
Yun Soo Ahn, Seoul, KR;
Heejung Jung, Gyeonggi-do, KR;
Hyerim Ga, Seoul, KR;
Juwan Maeng, Gyeonggi-do, KR;
Young-Kook Koh, Gyeonggi-do, KR;
Young Hee Lee, Chungcheongbuk-do, KR;
Kwang Jae Lee, Gyeonggi-do, KR;
Joonseo Kim, Gyeonggi-do, KR;
Hyunil Lee, Gyeonggi-do, KR;
Heungsik Yoon, Gyeonggi-do, KR;
AMINOLOGICS CO. LTD., Seoul, KR;
Abstract
The present invention relates to compounds 1, 1a (S-enantiomer) and 1b (R-enantiomer) of the following formula 1, and a method for preparing the same. [formula 1] The novel compound of the formula 1 is used as an important intermediate for preparing compounds 6, 6a (S-enantiomer) and 6b (R-enantiomer) of the following formula 6, which are 2,2'-binaphthol-3-aldehyde derivatives. Also, the present invention provides a method for preparing the compound of formula 1 with a very safe method at low cost. [formula 6]