Direct Arylation of Primary and Secondary sp<sup>3</sup> C–H Bonds with Diarylhyperiodonium Salts via Pd Catalysis
作者:Fei Pan、Peng-Xiang Shen、Li-Sheng Zhang、Xin Wang、Zhang-Jie Shi
DOI:10.1021/ol402116a
日期:2013.9.20
Palladium-catalyzed primary and secondary sp3 C–H bond arylation is reported. The method using diarylhyperiodonium salts as arylation reagents shows good functional group tolerance and proceeds under mild reaction conditions. The KIE experiments show that the C–H bond activation is the rate-determining step.
Construction of Racemic and Enantiopure Biaryl Unnatural Amino Acid Derivatives via Pd(II)‐Catalyzed Arylation of Unactivated Csp
<sup>3</sup>
−H Bonds
Pd-catalyzed stereoselective sp3 C−H activation and arylation of various carboxamides of aminoacids with iodobiaryls are reported. The synthesis of biaryl motif installed (DL-), L- and D-amino acidderivatives including norvaline, phenylalanine, leucine, norleucine, 2-aminooctanoic acid (with anti stereochemistry), alanine and aminoalkanoic acids has been described.
We report the synthesis of carbazole-based unnatural α-aminoacid and non-α-amino acid derivatives via a Pd(II)-catalyzed bidentate directing group 8-aminoquinoline-aided β-C(sp3)–H activation/functionalization method. Various N-phthaloyl, DL-, L- and D-carboxamides derived from their corresponding α-aminoacids, non-α-amino acids and aliphatic carboxamides were subjected to the β-C(sp3)–H functionalization
作者:Radha Tomar、Sonam Suwasia、Angshuman Roy Choudhury、Sugumar Venkataramani、Srinivasarao Arulananda Babu
DOI:10.1039/d2cc04870a
日期:——
Azobenzene-based unnaturalaminoacid motifs were synthesized via Pd(II)-catalyzed diastereoselective C(sp3)–H arylation of aminoacid carboxamides with iodoacetanilides and Mills azo coupling.
基于偶氮苯的非天然氨基酸基序是通过Pd( II ) 催化的氨基酸甲酰胺的非对映选择性 C(sp 3 )–H 芳基化与碘代乙酰苯胺和米尔斯偶氮偶联合成的。
Construction of C5‐Indole Unnatural Amino Acid Motifs via Diastereoselective Pd(II)‐Catalyzed β‐C(sp3)‐H Functionalization
Reported the construction of C5-indole-based unnaturalaminoacidderivativesvia the diastereoselective Pd(II)-catalyzed prochiral β-C(sp3)-Harylation method. Synthesis of novel C5-indole motif-installed aminoacidderivatives (anti-isomers) including norvaline, phenylalanine, leucine, norleucine, and 2-aminooctanoic acid and non-α-amino acids was reported. This work is a contribution towards enriching