Cholesteric helix inversion: investigations on the influence of the terminal group on the inversion of the helical pitch in trioxadecalins
作者:Volkmar Vill、H. Markus von Minden、Duncan W. Bruce
DOI:10.1039/a700234c
日期:——
Synthesis and mesogenic properties of new liquid crystals, bearing a
chiral trioxadecalin system, are described. As cholesteric helix
inversions in trioxadecalin systems bearing a terminal cyano or nitro
group have previously been observed, the terminal group has been changed
systematically to elucidate its influence on the occurrence of inversions
of the helical pitch.
PROCESS FOR PREPARING 4-ISOPROPYLCYCLOHEXYLMETHANOL
申请人:Stecker Florian
公开号:US20110207968A1
公开(公告)日:2011-08-25
The present invention relates to a process for preparing 4-isopropylcyclohexylmethanol (IPCHM) from para-cymene. The process for preparing 4-isopropylcyclohexylmethanol (IPCHM) comprises an electrochemical process for preparing a mixture of 4-isopropylbenzaldehyde dimethyl acetal and 4-(1-alkoxy-1-methylethyl)benzaldehyde dimethyl acetal, and intermediates passed through in the process, a hydrolysis step to form the corresponding benzaldehydes and a hydrogenation of this mixture to form 4-isopropylcyclohexylmethanol (IPCHM).
Novel benzaldehyde derivatives, their preparation, and their use
申请人:BASF Aktiengesellschaft
公开号:US04814510A1
公开(公告)日:1989-03-21
Benzaldehyde derivatives of the general formula I, where X is an oxygen atom or two R.sup.2 O groups and R.sup.1 and R.sup.2 are alkyl radicals of 1-4 carbon atoms, their preparation, and their use as odorants or odorant intermediates. ##STR1##
USE OF SUBSTITUTED BENZODIAZEPINONES AND BENZAZEPINONES OR THE SALTS THEREOF AS ACTIVE SUBSTANCES AGAINST ABIOTIC PLANT STRESS
申请人:BAYER CROPSCIENCE AG
公开号:US20150218110A1
公开(公告)日:2015-08-06
The use of substituted benzodiazepinones and benzazepinones of the general formula (I) or salts thereof
where the radicals in the general formula (I) correspond to the definitions given in the description,
for enhancing stress tolerance in plants to abiotic stress, for strengthening plant growth and/or for increasing plant yield, and to selected processes for preparing the compounds mentioned above.