124620-30-0Relevant articles and documents
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Cook,Hewett
, (1934)
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Samarium-based Grignard-type addition of organohalides to carbonyl compounds under catalysis of CuI
Liu, Chen,Liu, Yongjun,Qi, Yan,Song, Bin,Wang, Liang,Xiao, Shuhuan
supporting information, p. 6169 - 6172 (2021/06/30)
Grignard-type additions were readily achieved under the mediation of CuI (10 mol%) and samarium (2 equiv.) by employing various organohalides,e.g.benzyl, aryl, heterocyclic and aliphatic halides (Cl, Br or I), and diverse carbonyl compounds (e.g.carbonic esters, carboxylic esters, acid anhydrides, acyl chlorides, ketones, aldehydes, propylene epoxides and formamides) to afford alcohols, ketones and aldehydes, respectively, with high efficiency and chemoselectivity, in which the organosamarium intermediate might be involved.
Substituted cycloalkyl derivatives for the treatment of respiratory diseases
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Page/Page column 20, 21, (2008/06/13)
N-(Phenyl-substituted cycloalkyl or cycloalkylmethyl)-phenylethanolamine derivatives (I) (including benzo-heterocyclic analogs) are new. Also new are cyclopropylamine or cyclopropylmethylamine derivative intermediates (II). Phenylethanolamine derivatives of formula (I) (including optical isomers, enantiomer mixtures and racemates) and their salts, solvates and hydrates are new. n : 0 or 1; m : 1-4; X : direct bond, 2-6C alkenylene, -O-Q-, -NH-Q-, -S-Q- or -Q-; Q : 1-6C alkylene; R 1>H; and R 3>hydroxyalkyl or halo; or R 1> + R 2>OCH 2CONH, CH 2CH 2CONH, CH=CHCONH, NHCH 2CONH, SCH 2CONH, OCONH, SCONH, NHCONH or OCH 2SO 2NH (all optionally substituted (os) by 1 or 2 of alkyl, OH or halo); R 3>, R 4>H, OH, halo, 1-6C alkyl, 1-6C haloalkyl, 1-6C hydroxyalkyl, NH 2 or mono- or dialkylamino; R 5> - R 8>H, OR 9>, halo, 1-6C alkyl, 1-6C haloalkyl, 1-6C hydroxyalkyl, 3-6C cycloalkyl, 3-6C hydroxycycloalkyl, CN, NO 2, COR 9>, COOR 9>, CONR 10>R 11>, NR 10>R 11>, NR 10>COR 9>, NR 10>SO 2R 12>, SR 12>, SOR 12>, SO 2R 12>, SO 2NR 10>R 11> or halo; or two vicinal groups R 6> - R 8> together= 2-6C alkylene, 2-6C alkenylene or O-Q-O (all os by 1 or 2 of alkyl, alkoxy, OH or halo); R 9> - R 11>H, alkyl, aryl or arylalkyl; R 12>alkyl, aryl or arylalkyl; unless specified otherwise alkyl moieties have 1-4C and aryl moieties 6-10C. An independent claim is included for cycloalkylamine or cycloalkylalkylamine derivative intermediates of formula (II) as new compounds, provided that m= 1. [Image] [Image] ACTIVITY : Antiinflammatory; antiasthmatic; antiallergic; virucide; antibacterial; fungicide; protozoacide; anthelmintic; cardiant; dermatological; immunosuppressive; tocolytic; antiarrhythmic; vasotropic; antipruritic. MECHANISM OF ACTION : beta -Mimetic.
DTBB-Catalysed dilithiation of styrene and its methyl-derivatives: Introduction of two electrophilic reagents
Yus, Miguel,Martínez, Pedro,Guijarro, David
, p. 10119 - 10124 (2007/10/03)
The reaction of styrene and some methyl-substituted styrenes 1 with lithium and a catalytic amount of 4,4′-di-tert-butylbiphenyl (DTBB) in the presence of several electrophiles [Me3SiCl, Me2CO, Et2CO, (CH2)5CO, Pr2CO], in THF, at temperatures ranging from -78 to 0°C, gave, after hydrolysis, products 2 resulting from addition of lithium to the olefinic double bond and successive trapping with the electrophilic reagent. When a carbonyl compound was used as electrophile, mixtures of the monoaddition-reduction compounds 3 and 4 were obtained as by-products, which could be easily separated from the diaddition products 2.
