ʻO N,N-dimethyl-1,3-propanediamine (i kapa ʻia ʻo DMAPA) he diamine aliphatic haʻahaʻa me nā pūʻulu amino ʻelua a me nā pūʻulu amino mua i loko o ka mole. He wai waihoʻoluʻu a ʻākala me ka ʻala amonia. Ua puhi ia i ka lewa a hiki ke hoʻoheheʻe ʻia i ka wai a me nā mea hoʻoheheʻe organik. ʻO C5H14N2 kāna kumu molekala a ʻo kāna kumu hoʻohālike (CH3)2NCH2CH2CH2NH2.
ʻO ia kekahi o nā ʻano koʻikoʻi o nā pūhui amine momona a me kahi mea koʻikoʻi koʻikoʻi ma waena. Hoʻohana nui ʻia ia i nā lāʻau kemika, pesticides, dyes, resins, etc. I kēia manawa, hoʻohana nui ʻia ka hapa nui o DMAPA ma Kina no ka hoʻomākaukau ʻana i ka betaine a me ka amidopropyldimethylamine, i hoʻohana ʻia i nā huahana kemika i kēlā me kēia lā e like me ka shampoo, ka wai wai, ka gel wai pēpē, mea hoʻomaʻamaʻa, kopa wai a me ka mea holoi. Eia kekahi, hoʻohana ʻia ʻo DMAPA ma ke ʻano he polyurethane catalyst, epoxy resin curing agent a me ka wikiwiki, a i ka hana ʻana i nā mea hoʻonaninani.

ʻO ke ala synthesis nui o DMAPA ʻo ia: 1. Me ka hoʻohana ʻana i ka dimethylamine a me ka acrylonitrile ma ke ʻano he kumu waiwai, loaʻa ka dimethylaminopropionitrile (DMAPN) ma o Michael hoʻohui. Ma ke kaʻina hana o ka hoʻomākaukau ʻana o DMAPN, ma kahi o 2% o ka nui o ka nui o nā mea maka i hoʻohui ʻia i ka wai e hoʻoikaika i ka hoʻohui ʻana a hoʻoneʻe i ka dimethylamine azeotropically; 2. ʻO ka DMAPN i loaʻa ma ka distillation i ka ʻanuʻu mua e catalytically hydrogenated ma lalo o nā kūlana kiʻekiʻe. Ka hoomakaukau ana i ka DMAPA

Ma ka lua o ka hydrogenation e hoʻomākaukau ai i ka DMAPA, e loaʻa kahi hopena ʻaoʻao. ʻO nā huahana o kēia pane ʻana, ʻo ia ka amine bis-DMAPA lua a me ka amine tri-DMAPA tertiary. I kēia manawa, hoʻohana nui ka hana home o DMAPA i ka pane ʻana o ka ipuhao, a ʻo ka hydrogenation catalyst ʻo ia ka pauka Raney nickel. I mea e kāohi ai i ka hoʻokumu ʻia ʻana o kēia huahana, pono e hoʻohui i ka 12% -16% o ka nui o ka catalyst o ka hopena wai wai caustic a i ʻole ka ammonia wai, ka hopena aqueous alkali a me ka ammonia wai. ka wai ʻōpala a me ka wai ʻōpala, he mea paʻakikī ke hoʻohaʻahaʻa a hana ʻia, e hoʻonui ana i ke kaumaha o ka hana hope.

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