Selective reduction of the distant double bond(s) in geranyl, farnesyl and geranyl geranyl derivatives
作者:Marc Julia、Pierre Roy
DOI:10.1016/s0040-4020(01)88050-9
日期:1986.1
Selective addition of hydrogen chloride on the non-proximal double bond(s) of the title compounds followed by hydrogenolysis led to selective hydrogenation of these double bond(s).
在标题化合物的非最接近的双键上选择性地添加氯化氢,然后进行氢解,导致这些双键的选择性加氢。
METHOD FOR PREPARING SUPERABSORBENT POLYMER
申请人:LG Chem, Ltd.
公开号:EP3608359A1
公开(公告)日:2020-02-12
The present disclosure relates to a preparation method of a super absorbent polymer containing a novel cross-linking agent compound. The preparation method of a super absorbent polymer of the present disclosure can provide a super absorbent polymer exhibiting excellent absorption properties and an excellent deodorizing effect by including a cross-linking agent with a novel structure. Therefore, according to the present disclosure, since a separate additive for a deodorizing property is not required, processability and economic efficiency of the manufacturing process can be improved.
NOVEL CROSS-LINKING AGENT COMPOUND AND POLYMER PREPARED USING SAME
申请人:LG Chem, Ltd.
公开号:EP3702402A1
公开(公告)日:2020-09-02
The present disclosure relates to a novel cross-linking agent compound and a polymer prepared using the same. Specifically, the present disclosure relates to a cross-linking agent compound having a novel structure and excellent in cross-linking and pyrolysis, and a polymer prepared using the same.
On the selective reduction of the distal olefin in geraniol and farnesol derivatives
作者:Alexandre Demotie、Ian J.S. Fairlamb、Sally K. Radford
DOI:10.1016/s0040-4039(03)01047-5
日期:2003.6
The selective reduction of the distal olefin of many types of terpenoid-based natural products has been commonly approached using gaseous HCl in CH2Cl2. We herein present evidence that this method is inefficient and produces many side products. whose formation. ill our hands, was difficult to avoid (over several reaction runs). A more efficient procedure for geranyl acetate using 1 equiv. of TiCl4 in CH(2)Cl2 at -78degreesC is reported. (C) 2003 Elsevier Science Ltd. All rights reserved.
Acetyl chloride–ethanol brings about a remarkably efficient conversion of allyl acetates into allyl chlorides
作者:Veejendra K Yadav、K Ganesh Babu
DOI:10.1016/j.tet.2003.09.063
日期:2003.11
AcCl-EtOH transforms primary and secondary allyl acetates into allyl chlorides that retain the olefinic bond in the more stable position. Whereas secondary allyl alcohols also react with almost the same efficacy as the acetates, the reactions of primary allyl alcohols that possess 1,2-disubstituted alkenes are very slow. The products are isolated in high state of purity simply by removal of the volatiles. (C) 2003 Published by Elsevier Ltd.