Ligand-Enabled Gold-Catalyzed C(sp<sup>2</sup>)–N Cross-Coupling Reactions of Aryl Iodides with Amines
作者:Manjur O. Akram、Avishek Das、Indradweep Chakrabarty、Nitin T. Patil
DOI:10.1021/acs.orglett.9b03082
日期:2019.10.4
example of ancillary (P,N)-ligand-enabled gold-catalyzed C-N cross-couplingreactions of aryl iodides with amines is reported. The high generality of the reaction in de novo synthesis, late-stage modifications, and cascade processes to access functionalized indolinones and carbazoles underscores the synthetic potential of the presented strategy. Monitoring the reaction with ESI-HRMS and NMR provided strong
Copper(I)–USY as a Ligand-Free and Recyclable Catalyst for Ullmann-Type <i>O</i>-, <i>N</i>-, <i>S</i>-, and <i>C</i>-Arylation Reactions: Scope and Application to Total Synthesis
copper(I)-doped zeolite CuI–USY proved to be a versatile, efficient, and recyclable catalyst for various Ullmann-typecoupling reactions. Easy to prepare and cheap, this catalytic material enables the arylation and heteroarylation of diverse O-, N-, S-, and C-nucleophiles underligand-freeconditions while exhibiting large functional group compatibility. The facility of this catalyst to promote C–O bond
a bulky substituent that can interfere with the folding of the C-terminal helix 12 may exhibit antagonist activity toward MR. We discovered that the novel 1,4-benzoxazin-3-one derivative 19 (apararenone: MT-3995) acted as a highlyselective and potent nonsteroidal MRA. Apararenone exhibited a more potent antihypertensive and organ-protective activity than steroidal MRA eplerenone in a primary aldosteronism
Intermolecular aminoarylation of alkynes is described, via addition of diarylanilines to alkynes and Smiles–Truce rearrangement. The transformation manipulates the C–N bond of anilines directly, with no requirement for organometallicreagents or transition metal catalysis. The enaminoate products are versatile building blocks for different classes of heterocycles.