Hommelsheim, Rene’s team published research in Organic Letters in 2021-05-07 | CAS: 4381-25-3

2-Sulfoximidoyl Acetic Acids from Multicomponent Petasis Reactions and Their Use as Building Blocks in Syntheses of Sulfoximine Benzodiazepine Analogues. Recommended basis is Sulfoximine, Bioisosteric. Products is: https://www.ambeed.com/products/50578-18-2.html, 145026-07-9

(S-Methylsulfonimidoyl)benzene (BD302898) is a building block containing a sulfoximine group. Several CDK and ATR inhibitors have exemplified the utilization of the NH sulfoximine group as abioisostere for a sulfonamide group to overcome the main project hurdles of aqueous solubility, sulfonamide-mediated off-target activity and IP. Moreover, its NH group could be expediently further functionalized through Buchwald-Hartwig coupling reaction and multifarious nucleophilic reactions.. Recommended Products is: 83730-53-4 and 1621962-30-8.

Upon application of a multicomponent Petasis reaction, a broad range of NH-sulfoximines R1R2S(O)=NH (R1 = Ph, naphthalen-2-yl; R2 = Me, Ph, cyclopentyl, etc.) and boronic acids R3C6H5B(OH)2 (R3 = H, 4-Me, 3-SMe, 4-F, etc.) react with glyoxalic acid to afford the corresponding 2-substituted acetic acids with N-bound sulfoximidoyl groups R1R2S(O)=NCH2(R3)C(O)O(R4) (R4 = H, Me). The protocol features excellent yields under ambient, metal-free conditions and short reaction times. Furthermore, the applicability of 2-sulfoximidoyl acetic acids as building blocks for synthesizing sulfoximine-based benzodiazepine analogs (1R,3R)/(1S,3R)-I was demonstrated.

2-Sulfoximidoyl Acetic Acids from Multicomponent Petasis Reactions and Their Use as Building Blocks in Syntheses of Sulfoximine Benzodiazepine Analogues. Recommended basis is Sulfoximine, Bioisosteric. Products is: https://www.ambeed.com/products/50578-18-2.html, 145026-07-9

Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem