- Donor-Acceptor Materials Exhibiting Thermally Activated Delayed Fluorescence Using a Planarized N-Phenylbenzimidazole Acceptor
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An N-phenylbenzimidazole constrained in a coplanar fashion with a methylene tether (IMAC) was designed and used to prepare a series of emitters exhibiting thermally activated delayed fluorescence (TADF). Four novel TADF emitters using 9,9-dimethylacridine
- Sauvé, Ethan R.,Paeng, Jaesuk,Yamaguchi, Shigehiro,Hudson, Zachary M.
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Read Online
- HIGH STRESS RESISTANT PLANT GROWTH REGULATOR AND PREPARATION METHOD AND USE THEREOF
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Disclosed are a high stress resistant plant growth regulator and a preparation and use thereof. In particular, the compound provided by the present invention is an ABA substitute for significantly improving the stress resistance of plants, and therefore has a very wide application prospect.
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Paragraph 0264-0266
(2019/01/15)
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- CARBAMATE QUINABACTIN
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The present invention relates to novel sulfonamide derivatives, to processes and intermediates for preparing them, to plant growth regulator compositions comprising them and to methods of using them for controlling the growth of plants, improving plant tolerance to abiotic stress (including environmental and chemical stresses), inhibiting seed germination and/or safening a plant against phytotoxic effects of chemicals.
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Paragraph 0165; 0166
(2018/02/23)
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- Intramolecular conversion of N,N-bis(2-picolyl)ureas to cyclic carbamates
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Herein, we present a new methodology for preparing 6-membered ring carbamates from a CuI-promoted cyclization of N,N-bis(2-picolyl)amine substituted ureas. The reactions work best in the presence of up to five-fold excess of CuCl at room temper
- Jakob, Uwe,Bannwarth, Willi
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p. 6340 - 6344
(2015/11/16)
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- Synthesis of 1,4-dihydro-2H-3,1-benzoxazin-2-ones by hydriodic acid mediated cyclization of t-butyl 2-vinylphenylcarbamates
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A two-step facile synthesis of 4,4-disubstituted 1,4-dihydro-2H-3,1- benzoxazin-2-ones starting from α-substituted 2-aminostyrenes is described. The method involves the hydriodic acid mediated cyclization of t-butyl 2-vinylphenylcarbamate derivatives, whi
- Kobayashi, Kazuhiro,Fukamachi, Shuhei,Konishi, Hisatoshi
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experimental part
p. 2301 - 2307
(2011/04/16)
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- Convenient synthesis of 1,4-dihydro-2H-3,1-benzoxazin-2-ones by iodocyclization of t-butyl 2-vinylphenylcarbamates
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It has been found that t-butyl 2-vinylphenylcarbamate derivatives underwent iodocyclization on treatment with iodine in the presence of sodium hydrogencarbonate to afford 4-iodomethyl-1,4-dihydro-2H-3,1-benzoxazin-2-one derivatives in generally good yields. The reduction of these 4-iodomethyl derivatives with tributyltin hydride gave the corresponding 4-methyl derivatives in good yields.
- Kobayashi, Kazuhiro,Fukamachi, Shuhei,Nakamura, Daizo,Morikawa, Osamu,Konishi, Hisatoshi
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- SAR studies of 6-(arylamino)-4,4-disubstituted-1-methyl-1,4-dihydro-benzo[d][1,3]oxazin-2-ones as progesterone receptor antagonists
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We previously disclosed that 6-aryl benzoxazin-2-ones were PR modulators. In a continuation of this work we examined the SAR of new 6-arylamino benzoxazinones and found the targets 1-25, with an extra amino linker between the pendent 6-aryl groups and ben
- Kern, Jeffrey C.,Terefenko, Eugene A.,Fensome, Andrew,Unwallla, Ray,Wrobel, Jay,Zhu, Yuan,Cohen, Jeffrey,Winneker, Richard,Zhang, Zhiming,Zhang, Puwen
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p. 189 - 192
(2007/10/03)
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- Novel combinations of medicaments for the treatment of respiratory diseases containing long-acting beta-agonists and at least one additional active ingredient
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Disclosed are medicament combinations which contain in addition to one or more, preferably one, compound of general formula 1 wherein the groups X, Ra, Rb, R1, R1′, R2, R2′, R2″,
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Page/Page column 36-37
(2010/11/25)
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- NOVEL LONG-WORKING BETA-2-AGONISTS AND USE THEREOF AS MEDICAMENTS
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The invention relates to compounds of formula (1), wherein groups X, Ra, Rb, R1, R1', R2, R2', R2'', R2''', V and n can have the meanings as cited in the claims and in
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Page/Page column 22
(2008/06/13)
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- New long acting beta-2-agonists and their use as medicaments
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The present invention relates to compounds of formula 1 wherein the groups X, Ra, Rb, R1, R1′, R2, R2′, R2″, R2′″, V and n may have the meanings given in the claims an
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Page/Page column 10-11
(2008/06/13)
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- Metal catalyzed deoxygenation by carbon monoxide of o-substituted nitrobenzenes. Synthesis of 1,4-dihydro-2H-3,1-benzoxazin-2-one derivatives
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The reductive carbonylation of o-nitrobenzylalcohols, o-NO2C6H4CR1R2OH 1 = R2 = H (1); R1 = R2 = CH3 (2); R1 = H, R2 = CH3 (3); R1 = H, R2 = C6H5 (4)>, catalyzed by ruthenium and palladium-based catalytic systems gives the corresponding 1,4-dihydro-2H-3,1-benzoxazin-2-one derivatives, 1a-4a.Reaction conditions used were 20-60 atm of carbon monoxide and 100-170 deg C.The palladium catalyst has been shown to be far superior to the ruthenium catalyst in this reaction as far as selectivity is concerned.By carbonylation of o-nitrophenethylalcohol (5) with the palladium system as catalyst a mixture of the monomeric 5a and dimeric 5b cyclic carbamates has been obtained.
- Cenini, S.,Console, S.,Crotti, C.,Tollari, S.
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p. 157 - 162
(2007/10/02)
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- Imidazo-benzoxazinones, the preparation thereof and pharmaceutical compositions containing these compounds
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The invention relates to new imidazo-benzoxazinones of formula STR1 wherein the substituents are defined herein below, which compounds are useful in the treatment of cardiovascular disorders.
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