Organic compounds of formula (I), wherein: X is C, R1 to R6 may be independently selected from the group consisting of, H, C1-C3 alkyl, Br, F, Cl, R7 is O R8 is NH R9 is a group having 5 to12 carbons selected from the group consisting of cycloalkyl or substituted alkyl, wherein the substituent is selected from the group consisting of aryl or cycloalkyl. The compounds create / modify flavour, in particular sweet flavour and may be used in compositions and consumable products.
Organic compounds of formula (I),
wherein:
X is C,
R
1
to R
6
may be independently selected from the group consisting of, H, C
1
-C
3
alkyl, Br, F, Cl,
R
7
is O
R
8
is NH
R
9
is a group having 5 to 12 carbons selected from the group consisting of cycloalkyl or substituted alkyl, wherein the substituent is selected from the group consisting of aryl or cycloalkyl.
The compounds create/modify flavour, in particular sweet flavour and may be used in compositions and consumable products.
Palladium-Catalyzed C-7 Selective CH Carbonylation of Indolines for Expedient Synthesis of Pyrroloquinazolinediones
作者:Pei-Long Wang、Yan Li、Lan Ma、Chen-Guang Luo、Zhen-Yu Wang、Quan Lan、Xi-Sheng Wang
DOI:10.1002/adsc.201501070
日期:2016.3.31
A novel palladium‐catalyzedC‐7 selectiveCH carbonylation of indolines with carbon monoxide for an expedient synthesis of pyrroloquinazolinediones, a structural motif with great potential in biologically active compounds, has been developed. Oxidation of the pyrroloquinazolinedione with 2,3‐dichloro‐5,6‐dicyano‐p‐benzoquinone (DDQ) could easily afford the corresponding indole‐based derivative in
Medium-Ring Nitrogen Heterocycles through Migratory Ring Expansion of Metalated Ureas
作者:Jessica E. Hall、Johnathan V. Matlock、John W. Ward、Katharine V. Gray、Jonathan Clayden
DOI:10.1002/anie.201605714
日期:2016.9.5
benzo‐fused nitrogen heterocycles (indolines, tetrahydroquinolines, and their homologues) undergo migratory ring expansion through deprotonation of their benzylic urea derivatives with lithium diisopropylamide (LDA) in the presence of N,N′‐dimethylpropylideneurea (DMPU). The products of the reactions are benzodiazepines, benzodiazocines, and their homologues, with ring sizes of 8–12. The reactions tolerate a