Diverting the 5-<i>exo</i>-Trig Oxypalladation to Formally 6-<i>endo</i>-Trig Fluorocycloetherification Product through 1,2-O/Pd(IV) Dyotropic Rearrangement
作者:Jing Gong、Qian Wang、Jieping Zhu
DOI:10.1021/jacs.3c06158
日期:2023.7.26
palladium(II)-catalyzed, Selectfluor-mediated formal 6-endo-trig fluorocycloetherification of γ-hydroxyalkenes for the synthesis of functionalized tetrahydropyrans. Mechanistically, an σ-alkyl-Pd(II) intermediate resulting from the 5-exo-trig oxypalladation process is isolated and characterized by X-ray crystallographic analysis. Its oxidation with Selectfluor to Pd(IV) triggers the chemoselective 1,2-O/Pd(IV)
[EN] CARBOXYLIC DERIVATIVES FOR USE IN THE TREATMENT OF CANCER<br/>[FR] DÉRIVÉS CARBOXYLIQUES DESTINÉS À ÊTRE UTILISÉS DANS LE TRAITEMENT DU CANCER
申请人:CRYSTAX PHARMACEUTICALS S L
公开号:WO2009080722A2
公开(公告)日:2009-07-02
The invention provides novel compounds of formula (I), wherein: R1 is a radical derived from one of the known ring systems; R2 is a phenyl radical optionally substituted; Xn represents a birradical selected from the group consisting of: -(CH2)1-4-, (C2-C4)-alkenyl, (C2-C4)alkynyl, -S-(CH2)1-3-#, and - (CH2)1-3-O-#; wherein the symbol # indicates the position at which Xn is attached to R1; Yn is a birradical selected from the group consisting of: - (CH2)2-4-, -S-(CH2)1-3#, and -O-(CH2)1-3-#,; wherein the symbol # indicates the position at which Yn is attached to R2; and R3 is a radical selected from the group consisting of: -OR4. The compounds of formula (I) are useful in the treatment of cancer.
Copper(I)-Catalyzed Enantioselective Nucleophilic Borylation of Aliphatic Ketones: Synthesis of Enantioenriched Chiral Tertiary α-Hydroxyboronates
作者:Koji Kubota、Shun Osaki、Mingoo Jin、Hajime Ito
DOI:10.1002/anie.201702826
日期:2017.6.1
A new method was developed for the first catalytic enantioselective borylation of aliphaticketones. A variety of substrates reacted efficiently with bis(pinacolato)diboron in the presence of a copper(I)/chiral N-heterocyclic carbene complex catalyst to furnish optically active tertiary α-hydroxyboronates with moderate to high enantioselectivities (up to 94 % ee). Notably, the product could be converted
CARBOXYLIC DERIVATIVES FOR USE IN THE TREATMENT OF CANCER
申请人:Aymami Bofarull Juan
公开号:US20110105544A1
公开(公告)日:2011-05-05
The invention provides novel compounds of formula (I), wherein: R
1
is a radical derived from one of the known ring systems; R
2
is a phenyl radical optionally substituted; X
n
represents a birradical selected from the group consisting of: —(CH
2
)
1-4
—, (C
2
-C
4
)-alkenyl, (C
2
-C
4
)alkynyl, —S—(CH
2
)
1-3
—#, and —(CH
2
)
1-3
—O—#; wherein the symbol # indicates the position at which X
n
is attached to R
1
; Y
n
is a birradical selected from the group consisting of: —(CH
2
)
2-4
—, —S—(CH
2
)
1-3
#, and —O—(CH
2
)
1-3
—#; wherein the symbol # indicates the position at which Y
n
is attached to R
2
; and R
3
is a radical selected from the group consisting of: —OR
4
. The compounds of formula (I) are useful in the treatment of cancer.