( ( ( ( ( The synthesis ) ( was ( optimized ( as ( the ( proper precursor ) ) ) ) ) ) and ) ( ( reaction conditions ) ( were ( concerned ( to ( ( produce ( 96 % ) ) ( ( pure product ) ( -LRB- ( ( overall ( yield ( 59 % ) ) ) -RRB- ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT The) (NN synthesis)) (VP (VBD was) (VP (VBN optimized) (PP (IN as) (NP (DT the) (JJ proper) (NN precursor)))))) (CC and) (S (NP (NN reaction) (NNS conditions)) (VP (VBD were) (ADJP (JJ concerned) (S (VP (TO to) (VP (VB produce) (NP (CD 96) (NN %)) (NP (NP (JJ pure) (NN product)) (PRN (-LRB- -LRB-) (S (ADVP (RB overall)) (VP (VB yield) (NP (CD 59) (NN %)))) (-RRB- -RRB-))))))))) (. .)))
The synthesis was optimized as the proper precursor and reaction conditions were concerned to produce 96% pure product (overall yield 59%).
(ROOT (S (NP (NP (DT The) (NN amount)) (PP (IN of) (NP (NP (NN product)) (SBAR (WHNP (WDT that)) (S (VP (MD may) (VP (VB be) (VP (VBN produced) (PP (IN by) (NP (DT a) (NN reaction))) (PP (IN under) (NP (VBN specified) (NNS conditions))))))))))) (VP (VBZ is) (VP (VBN called) (NP (JJ theoretical) (NN yield)))) (. .)))
The amount of product that may be produced by a reaction under specified conditions is called theoretical yield.