( ( As ( shown ( in ( Scheme 2 ) ) ) ) ( , ( ( ( Swern oxidation ) ( of ( alcohol 12 ) ) ) ( ( ( gave ketone ) 13 ) . ) ) ) )
(ROOT (S (SBAR (IN As) (S (VP (VBN shown) (PP (IN in) (NP (NNP Scheme) (CD 2)))))) (, ,) (NP (NP (NNP Swern) (NNP oxidation)) (PP (IN of) (NP (NN alcohol) (CD 12)))) (VP (VBD gave) (NP (NN ketone)) (NP (CD 13))) (. .)))
As shown in Scheme 2, Swern oxidation of alcohol 12 gave ketone 13.
(ROOT (S (NP (JJ Secondary) (NN alcohol)) (VP (VBZ forms) (NP (DT a) (NN ketone)) (SBAR (WHADVP (WRB when)) (S (VP (VBD oxidized))))) (. .)))