Two blue light reactions in this one again from Merck. Both nice examples of late stage photochemical functionalization with either...

Today this one published from Merck. We know those guys love their blue light photoredox. Could one of you super smart types out there...

Nope not selective, and not very high yielding but they get it! It's described here, but first published here. This 1,4 had to be one...

....wait people are actually using that one !? Sweet! WO/2022/049134 puts it into practice. Coulda made 4g in a lightning! Just sayin...