Reductive C(sp)-C(sp) homo-coupling of benzyl or allyl halides with H using a water-soluble electron storage catalyst.

This paper reports the first example of a reductive C(sp)-C(sp) homo-coupling of benzyl/allyl halides in aqueous solution by using H as an electron source {turnover numbers (TONs) = 0.5-2.3 for 12 h}.