Gabriel Dossen and Paddy Donovan advanced to the last 16 of the European Youths in Antalya, Turkey today.
But Craig Kavanagh and Eamer Coughlan bowed out at the last 32 stage to Israel and the Czech Republic.
Donovan progressed after recording an inside the distance win.
The Limerick light-welter, a World Junior finalist, forced Poland’s Konrad Dialas into standing counts in rounds one and two en route to a second frame TKO.
Dialas took a count off a cluster of punches in the first and, after following instructions from his corner, Donovan fired in a big body shot in the second the ref intervened again and waved it off.
Dossen, boxing well within himself in all three rounds, saw off Estonia’s Pavel Kamanin in the welterweight class.
The Galway southpaw, looking composed throughout today, mostly dictated terms with his jab. Occasionally picking up the pace, as he did to good effect near the end of the second, the World Youth bronze medallist took all three rounds.
Kavanagh was edged on points by Israel’s David Kharmats in the bantam class and Coughlan’s fight with Artur Szachbazian of the Czech Republic, who was born in Poland, was stopped in the second after Coughlan took a standing count.
Dossen, Terry Donoghue, David Oliver Joyce and Jordan Myers are in action tomorrow.
Boxing begins at 2.30pm (Irish time).
European Youth Championships Antalya. Turkey October 21st/29th
October 21st Preliminaries (Last 32)
56kg Craig Kavanagh (Ireland) lost to David Kharmats (Israel) Pts
60kg Eamer Coughlan (Ireland) lost to Artur Szachbazian (Czech Republic) TKO2
64kg Patrick Donovan (Ireland) beat Konrad Dialas (Poland) TKO2
69kg Gabriel Dossen (Ireland) beat Pavel Kamanin (Estonia) 5-0
October 22nd (Last 16)
49kg Terry Donoghue (Ireland) v Danil Lysenko (Russia)
52kg David Oliver Joyce (Ireland) v Amid Alizada (Azerbaijan)
69kg Gabriel Dossen (Ireland) v Olek Kravets (Ukraine)
75kg Jordan Myers (Ireland) v Rami Kiwan (Bulgaria)
October 23rd (last 16)
64kg Patrick Donovan (Ireland) v Tomi Lorencic (Slovenia)
49kg Terry Donoghue (St Michaels Athy BC)
52kg David Oliver Joyce (Ballymun BC)
56kg Craig Kavanagh (Crumlin BC)
60kg Eamer Coughlan (Riverstown BC)
64kg Paddy Donovan (OLOL BC)
69kg Gabriel Dossen (Olympic BC)
75kg Jordan Myers (Sligo City BC)
Head Coach: Zauri Antia
Coach: John Conlan
R&J: Diarmuid MacDiarmada