Lithium dialkylcuprates undergo conjugate addition to thiochromones to afford 2-alkylthiochroman-4-ones in good yields. This approach provide an efficient and general synthetic approach to privileged sulfur-containing structural motifs and valuable precursors for many pharmaceuticals. starting from common substrates-thiochromones. Good yields of 2-alkyl-substituted thiochroman-4-ones ... https://www.parisnaturalfoodes.shop/product-category/nail-lacquer-1973/