Ethylene-tetrafluoroethylene (ETFE) cotelomer iodides and their transformation to surface protection intermediates
作者:Weiming Qiu、Anilkumar Raghavanpillai、Peter A. Brown、Wayne R. Atkinson、Michael F. Vincent、William J. Marshall
DOI:10.1016/j.jfluchem.2014.10.004
日期:2015.1
the cotelomerization of ethylene and tetrafluoroethylene (TFE) with 1H,1H,2H,2H-perfluoroalkyl iodides. The telomerization led to ethylene-tetrafluoroethylene (ETFE) cotelomer iodides with the incorporation of ethylene and TFE in the cotelomer chain in an alternating fashion. By controlling the reaction parameters such as total pressure, temperature, feed ratio of the monomers, initiator feed, and
Fluorine-containing urethanes represented by the general formula:
[Rf-A
1
-Z-X
1
—OC(═O)NH—]
m
I[—NHC(═O)O—Y
1
]
n
[—NHC(═O)O—(ClCH
2
—)X
2
O)
a
—R
1
]
k
(1)
wherein I is a group derived from a polyisocyanate by removal of the isocyanato groups; Rf is perfluoroalkyl of 1 to 21 carbon atoms; A
1
is a direct bond or an organic group of 1 to 21 carbon atoms; Z is —S— or —SO
2
—; X
1
is a divalent, straight-chain or branched, C
1-5
aliphatic group which may have at least one hydroxyl group; X
2
is a trivalent, straight-chain or branched, C
2-5
aliphatic group; Y
1
is a monovalent organic group which is optionally hydroxylated; and R
1
is hydrogen or alkyl of 1 to 10 carbon atoms.
An Elastic Organic Crystal Enables Macroscopic Photoinduced Crystal Elongation
作者:Yu-Shan Chen、Chih-Hsuan Wang、Yu-Hsuan Hu、Chun-Yi David Lu、Jye-Shane Yang
DOI:10.1021/jacs.2c13210
日期:2023.3.22
Among the various types of photomechanical deformations of organiccrystals, photoinduced elongation of millimeter-scale crystals has yet to be demonstrated. Here we report that the millimeter-sized crystalline rods of an anthracene–pentiptycene hybridorganic π-system (1) are highly elastic and able to elongate up to 21.6% or 0.40 mm without fragmentation upon undergoing [4 + 4] photodimerization
The present invention provides a compound having the following general formula (1):
in which
R1 represents a hydrogen atom, etc.;
R2 represents a C3-C5 perhalogenoalkyl group, etc.;
each of R3 and R4 independently represents a hydrogen atom, etc.;
X represents an oxygen atom or a sulfur atom;
m represents an integer of 2 to 14; and
n represents an integer of 0 to 8;
or enantiomers of the compound, or hydrates or pharmaceutically acceptable salts of the compound or its enantiomers. The compound of general formula (1) is advantageous in pharmaceutical use because of its anti-estrogenic activity.
本发明提供了具有以下通式(1)的化合物:
其中
R1 代表氢原子等
R2 代表 C3-C5 全卤代烷基等;
R3 和 R4 各自独立地代表氢原子等;
X 代表氧原子或硫原子;
m 代表 2 至 14 的整数;以及
n 代表 0 至 8 的整数;
或该化合物的对映体,或该化合物或其对映体的水合物或药学上可接受的盐。通式(1)化合物具有抗雌激素活性,因此在医药用途中具有优势。
FLUORINE-CONTAINING URETHANES
申请人:DAIKIN INDUSTRIES, LTD.
公开号:EP1783119A1
公开(公告)日:2007-05-09
Fluorine-containing urethanes represented by the general formula:
[Rf-A1-Z-X1-OC(=O)NH-]m I [-NHC(=O)O-Y1]n [-NHC(=O)O-((ClCH2-)X2O)a-R1]k (1)
wherein I is a group derived from a polyisocyanate by removal of the isocyanato groups; Rf is perfluoroalkyl of 1 to 21 carbon atoms; A1 is a direct bond or an organic group of 1 to 21 carbon atoms; Z is -S- or -SO2-; X1 is a divalent, straight-chain or branched, C1-5 aliphatic group which may have at least one hydroxyl group; X2 is a trivalent, straight-chain or branched, C2-5 aliphatic group; Y1 is a monovalent organic group which is optionally hydroxylated; and R1 is hydrogen or alkyl of 1 to 10 carbon atoms.