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|English to English translations [PRO]|
Science - Chemistry; Chem Sci/Eng
|English term or phrase: alternatively|
|"The resin is drained and is washed alternatively with CH2Cl2 (4 mL, 2 times), MeOH (4 mL, 2 times) and again with CH2Cl2 (4 mL, 2 times)." |
It is not clear to me (the meaning of "alternatively"in this context). Shouldn't it be "subsequently"?
Maybe it means that the resin can be washed or not(????)
The dry Wang resin-Fmoc-glycine ester (140 mg, 0.106 mmol) is treated with 20% piperidine in CH2Cl2 (3 mL, 15 min, 2 times) and washed alternatively with CH2Cl2 (3 mL, 2 times) and MeOH (3 mL, 2 times) and again with CH2Cl2 (3 mL, 2 times). The resin is then suspended in CH2Cl2-MeOH (1:1, 4 mL), and the title A compound, 4-[5-(2,4-dimethoxy-benzyl)-1,1,4-trioxo-1,2,5-thiadiazolidin-2-ylmethyl]-benzoic acid (133 mg, 0.317 mmol), benzaldehyde (32 ml, 0.317 mmol) and butylisonitrile (33 ml, 0.317 mmol) are added and the mixture is shaken for 48 h. The resin is drained and is washed alternatively with CH2Cl2 (4 mL, 2 times), MeOH (4 mL, 2 times) and again with CH2Cl2 (4 mL, 2 times). The resin is then shaken with CH2Cl2-TFA (1:1, 4 mL) for 4 h and drained into a receiving flask.
|they meant to write: alternately|
I believe the writer wanted to say "alternately", which means: "in alternating sequence or position" and "ocurring and succeding by turns".
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Local time: 18:16
|Many thanks to all of you! |
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