Similarly, in alkoxycarbonylation and aminocarbonylation, the limiting reagents ([1,1'-biphenyl]-4-yl trifluoromethanesulfonate and (E)-1-iodooct-1-ene, respectively) were continuously added to the reaction media to maintain their presence throughout the reaction (see Supplementary Information). This strategy resulted in excellent selectivity towards the desired carbonylated products, facilitated by the low relative concentration of the added reagent and the continuous replenishment of carbon monoxide. The products of the carbonylative Suzuki coupling, alkoxycarbonylation, and aminocarbonylation reactions were isolated in good yields (79%, 61%, and 72%, respectively). These findings highlight the adaptability of fine chemical production to specific carbon dioxide sources, with potential for scalability through a numbering-up or sizing-up strategy to adjust the carbon monoxide production accordingly. Figure Carbon monoxide generated by the photoreactor is subsequently used as a reagent in the (i) carbonylative Suzuki coupling (7.5 mol% of Pd(OAc)2 and Xantphos, 3 eq. of K2CO3, in dioxane:THF (After addition, 98:2 volume ratio), addition over 6 hours, reaction for 7 hours at 80 °C), (ii) an alkoxycarbonylation (5 mol% of Pd(OAc)2 and dppp, 3 eq. of TEA, in dioxane, addition over 6 hours, reaction for 6.5 hours at 70 °C) and (iii) an aminocarbonylation reaction (10 mol% of Pd2(dba)3 and tpp, 3 eq. of K2CO3, in dioxane, addition over 5 hours, reaction for 5.5 hours at 80 °C.