Synthesis and Characterization of the Four Geometrical Isomers of 3,5-Dodecadienyl Acetate.
摘要:
Practical convergent syntheses of the four geometrical isomers of 3,5-dodecadienyl acetate are presented. These substances have been characterized by NMR and mass spectroscopy. (3E,5Z)-3,5-Dodecadienyl acetate is the main female sex pheromone component of the leaf roller Bonagota cranaodes, which is an important insect pest in apples in South America.The isomeric 3,5-dodecadienyl acetates, as pure isomers and in defined mixtures, have been used as trap lures for Eying insects in field screening experiments in Lithuania. Although no insects were found in the control traps, the numbers of males caught in the baited traps were not high enough to be statistically significant.
Identification and synthesis of the sex pheromone of Phtheochroa cranaodes (Lepidoptera: Tortricidae)
作者:C. Rikard Unelius、Alvaro Eiras、Peter Witzgall、Marie Bengtsson、Adelécio Kovaleski、Evaldo F. Vilela、Anna-Karin Borg-Karlson
DOI:10.1016/0040-4039(96)00050-0
日期:1996.2
The pheromone of Phtheochroacranaodes (Lepidoptera: Tortricidae) was identified as (3E,5Z)-3,5-dodecadienyl acetate (5) by GC-MS analysis of female gland extracts and field trapping of males with synthetic compound.
LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:JNC CORPORATION
公开号:US20150299576A1
公开(公告)日:2015-10-22
A liquid crystal composition is described, containing at least one compound selected from compounds of formula (1) and at least one compound selected from compounds of formula (2):
wherein, for example, X is —OH or —COOH; Z
1
is methylene; Z
2
, Z
3
, Z
4
and Z
5
are a single bond; L is —CH═CH—CH═CH—; R
1
is straight alkyl; P
1
, P
2
and P
3
are a polymerizable group; ring A and ring B are 1,4-phenylene or naphthalene-2,6-diyl; and a, b, c and d are 0 or 1.